History Main / BizarreSexualDimorphism

14th Mar '17 11:34:52 PM ImpudentInfidel
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* In one of the many ''Franchise/StarTrek'' role-playing games, Orions are presented as having green-skinned females and gold-skinned males. No canon source bears this out. On the live-action shows, no males are seen until ''[[Series/StarTrekEnterprise Enterprise]]'' and they're all green. Many of the ExpandedUniverse sources present Orions as having a range of skin colors, but pretty much universally present males and females as having the same range of colors, which generally doesn't include gold.

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* In one of the many ''Franchise/StarTrek'' role-playing games, Orions are presented as having green-skinned females and gold-skinned males. No canon source bears this out. On the live-action shows, no males are seen until ''[[Series/StarTrekEnterprise Enterprise]]'' and they're all green. Many of the ExpandedUniverse sources present Orions as having a range of skin colors, but pretty much universally present males and females as having the same range of colors, which generally doesn't include gold. The one time their men were shown on the show they were basically the extreme of human dimorphism, all being huge and heavily muscled males or smaller and lithe females.
14th Mar '17 11:20:15 PM ImpudentInfidel
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* ''Literature/MythAdventures'' by Robert Asprin includes a dimension called Trollia, where the men are [[AllTrollsAreDifferent Trolls]] (enormous, warty, frightening creatures right out of a fairy tale) and the women are [[FanService Trollops]] (gorgeous and human-looking except for green-tinged skin and hair). Despite their smaller size, the women are as strong or stronger than the males.

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* ''Literature/MythAdventures'' by Robert Asprin includes a dimension called Trollia, where the men are [[AllTrollsAreDifferent Trolls]] (enormous, warty, frightening creatures right out of a fairy tale) and the women are [[FanService Trollops]] (gorgeous and human-looking except for green-tinged skin and hair). Despite their smaller size, the women are as strong or stronger than the males. The women are widely believed to be much more intelligent than the males, but this is actually a case of the men who leave their homeworld playing dumb to land good-paying jobs as dumb muscle.
12th Mar '17 3:58:44 PM nombretomado
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* TabletopGame/{{Mortasheen}} has the [[http://www.bogleech.com/mortasheen/qlex.htm Q-Lex]], which has a small parasitic male hanging onto the large, predatory female. This is based on actual mosquito sexual dimorphism, which is appropriate, given that this creature is a [[HalfHumanHybrid human/mosquito hybrid]].


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* ''WebOriginal/{{Mortasheen}}'' has the [[http://www.bogleech.com/mortasheen/qlex.htm Q-Lex]], which has a small parasitic male hanging onto the large, predatory female. This is based on actual mosquito sexual dimorphism, which is appropriate, given that this creature is a [[HalfHumanHybrid human/mosquito hybrid]].
9th Mar '17 6:56:52 PM Vir
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* ''VideoGame/{{Lineage 2}}'' has male dwarves looking like old bearded men, albeit quite short -- they are dwarves after all, while females are quintessential loli girls.

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* ''VideoGame/{{Lineage 2}}'' ''VideoGame/Lineage2'' has male dwarves looking like old bearded men, albeit quite short -- they are dwarves after all, while females are quintessential loli girls.



* In ''VideoGame/{{Dota 2}}'' there are two representatives of the Slithereen race, living underwater. The females look noticeably more humanoid, while the males have much more prevalent fish traits. Compare [[http://dota2.cyborgmatt.com/DotA2_6.73Slardar.jpg Slardar]] and [[http://www.gamersbook.com/repository/images/_variations/f/0/f06e18273b9c81eb04a176b14f9a721b_content_large.jpg Naga Siren.]] However, Slark, a bipedal fish-creature is also described as Slithereen- it's thought by some that Slithereen is an alliance rather than a race.

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* In ''VideoGame/{{Dota 2}}'' ''VideoGame/Dota2'' there are two representatives of the Slithereen race, living underwater. The females look noticeably more humanoid, while the males have much more prevalent fish traits. Compare [[http://dota2.cyborgmatt.com/DotA2_6.73Slardar.jpg Slardar]] and [[http://www.gamersbook.com/repository/images/_variations/f/0/f06e18273b9c81eb04a176b14f9a721b_content_large.jpg Naga Siren.]] However, Slark, a bipedal fish-creature is also described as Slithereen- it's thought by some that Slithereen is an alliance rather than a race.


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* The Draken in ''VideoGame/WildStar'' have females who look mostly humanoid, compared to the hunched over and far more bestial males.
24th Feb '17 11:48:18 AM AthenaBlue
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** The Devaronians (See picture [[http://static.tvtropes.org/pmwiki/pub/images/200px-Devaronians.jpg here]]). The males look like devils. Hairless, with pointed teeth and large triangular horns. Also kind of small. The females are tall, hornless, covered in thick fur, and look like humanoid lemurs. (Although, with the Great Decanonization, this may no longer be the case.)

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** The Devaronians (See picture [[http://static.tvtropes.org/pmwiki/pub/images/200px-Devaronians.jpg here]]). Devaronians. The males look like devils. Hairless, devils, hairless, with pointed teeth and large triangular horns. Also kind of small. The females have hair, and dark circles where the males have horns. Culturally, both are tall, hornless, covered in thick fur, also distinct: males, while devoted to their families, are often struck by wanderlust and look like humanoid lemurs. (Although, with wander the Great Decanonization, galaxy. Females tend to stay on Devaron and are highly industrious and politically minded. In ''[[Franchise/StarWarsLegends Legends]]'' canon, they were also this may no longer be the case.)trope, but in a different way.
23rd Feb '17 11:25:09 PM Prophet82
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*** Some of these body modifications can also result in some forms of artificial sexual dimorphism, based largely on those same cultural expectations. In a few examples, the [[http://en.wikipedia.org/wiki/Kayan_%28Burma%29 Kayan people]] of Burma have women who wear stacked brass coils that appear to greatly elongate their necks. In China, the notorious practice of [[http://en.wikipedia.org/wiki/Foot_binding foot binding]] meant that a good proportion of Chinese women had feet shaped differently then the males. This can even include things such as earrings and tattoos. Traditionally, earrings were seen as something only women wore and a woman with tattoos was seen as unseemly. While these may no longer apply in modern Western cultural standards, there are still some exceptions (for example, men don't normally wear earrings in both ears or large earrings like the giant hoop variety, and a woman with a fully tattooed arm is generally seen as unusual or noteworthy).

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*** Some of these body modifications can also result in some forms of artificial sexual dimorphism, based largely on those same cultural expectations. In a few examples, the [[http://en.wikipedia.org/wiki/Kayan_%28Burma%29 Kayan people]] of Burma have women who wear stacked brass coils that appear to greatly elongate their necks. In China, the notorious practice of [[http://en.wikipedia.org/wiki/Foot_binding foot binding]] meant that a good proportion of Chinese women had feet shaped differently then than the males. This can even include things such as earrings and tattoos. Traditionally, earrings were seen as something only women wore and a woman with tattoos was seen as unseemly. While these may no longer apply in modern Western cultural standards, there are still some exceptions (for example, men don't normally wear earrings in both ears or large earrings like the giant hoop variety, and a woman with a fully tattooed arm is generally seen as unusual or noteworthy).
22nd Feb '17 12:37:11 AM AthenaBlue
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* This ''appeared'' to be the case for the plants in ''Manga/{{Trigun}}'', with the girls in bulbs with the big strange eyes and all, and the only two guys walking around looking like blond men. But later manga material shows that Vash and Knives really are different because they're mutants (probably throwbacks; the odds that the people who engineered the plants didn't use human DNA are vanishingly small), because some female independents come from space; the twins are just even weirder. Although, some like Cronica who appears at the end of the story, she looks like a Manga/{{Claymore}}, pale skin, blonde hair and is beautiful.
* Grand Princess Fire Dragon from ''LightNovel/MaoyuuMaouYuusha'' looks like a beautiful human girl with little horns and a flaming tail. Her father is a bona fide Fire Dragon.



* The ''Anime/HaloLegends'' short ''The Duel'' depicts Sangheili/Elite females as looking significantly more humanoid than their male counterparts. However, WordOfGod is that this was pure artistic license by the animators; as detailed in later ''Franchise/{{Halo}}'' media, Sangheili females canonically look almost exactly like the males.



* The ''Anime/HaloLegends'' short ''The Duel'' depicts Sangheili/Elite females as looking significantly more humanoid than their male counterparts. However, WordOfGod is that this was pure artistic license by the animators; as detailed in later ''Franchise/{{Halo}}'' media, Sangheili females canonically look almost exactly like the males.

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* The ''Anime/HaloLegends'' short ''The Duel'' depicts Sangheili/Elite females as Grand Princess Fire Dragon from ''LightNovel/MaoyuuMaouYuusha'' looks like a beautiful human girl with little horns and a flaming tail. Her father is a bona fide Fire Dragon.
* This ''appeared'' to be the case for the plants in ''Manga/{{Trigun}}'', with the girls in bulbs with the big strange eyes and all, and the only two guys walking around
looking significantly more humanoid than their male counterparts. However, WordOfGod is that this was pure artistic license by the animators; as detailed in like blond men. But later ''Franchise/{{Halo}}'' media, Sangheili females canonically look almost exactly manga material shows that Vash and Knives really are different because they're mutants (probably throwbacks; the odds that the people who engineered the plants didn't use human DNA are vanishingly small), because some female independents come from space; the twins are just even weirder. Although, some like Cronica who appears at the males.end of the story, she looks like a Manga/{{Claymore}}, pale skin, blonde hair and is beautiful.



* Somewhat inverted in Donald Duck Comics. While in most real duck species, males have brighter colores feathers than females, nearly all of the ducks in the comics are white and gender differences are only visible in clothing and eyelashes.



* In Phil Foglio's ''ComicBook/XXXenophile'', Martian females are all gorgeous, buxom, four-armed women, and the males are tiny, squat, furry, mostly shapeless (and, incidentally, ''non-sapient'') hexapods with disproportionately large sex organs.
** This is then given an extra twist at the end of the story. After making "First Contact" with a human explorer, a giant [[HumongousMecha battlesuit]] bursts into the room- and the Martians assume that the giant robot must be a human female.
** Huldra (female [[AllTrollsAreDifferent trolls]]), in the story ''A Beautiful Tale'', were [[SuperStrength scary-powerful]] {{Cute Monster Girl}}s with [[CuteLittleFangs cute little]] ''[[CuteLittleFangs shark teeth]]'' and long tufted prehensile tails. We never actually see a male troll... but a human character who [[TakeOurWordForIt has]] infers that humans must not look dimorphic at ''all'' to trolls. (She's wrong; the huldra is fully aware that she's female and ''still'' wants to marry her. [[GirlsLove With all that that implies]].)

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* In Phil Foglio's ''ComicBook/XXXenophile'', Martian females are all gorgeous, buxom, four-armed women, and the males are tiny, squat, furry, mostly shapeless (and, incidentally, ''non-sapient'') hexapods with disproportionately ''Comicbook/{{Legion of Super-Heroes}}'', male Dryads look like large sex organs.
** This is then given an extra twist at the end
masculine-seeming humanoids made of the story. After making "First Contact" with a human explorer, a giant [[HumongousMecha battlesuit]] bursts into the room- and the Martians assume that the giant robot must be a human female.
** Huldra (female [[AllTrollsAreDifferent trolls]]), in the story ''A Beautiful Tale'', were [[SuperStrength scary-powerful]] {{Cute Monster Girl}}s with [[CuteLittleFangs cute little]] ''[[CuteLittleFangs shark teeth]]'' and long tufted prehensile tails. We never actually see a male troll... but a human character who [[TakeOurWordForIt has]] infers that humans must not look dimorphic at ''all'' to trolls. (She's wrong; the huldra is fully aware that she's
stone. In some continuities, female Dryads look like large masculine-seeming humanoids made of crystal. (In others they look like the male dryads with narrower waists and ''still'' wants to marry her. [[GirlsLove With all that that implies]].NonMammalMammaries.)



* ''ComicBook/RomSpaceknight's'' enemies the Dire Wraiths come in two flavors: the technology-using males, who look like ugly, fanged, gangly-limbed Pillsbury Doughboys; and the sorcery-using females, who are pure {{Starfish Alien}}s.
** The Dire Wraiths are eventually revealed to be offshoots of the [[ComicBook/FantasticFour Skrulls]]. For a race of [[VoluntaryShapeshifting shapeshifters]], appearance isn't that important.
* In the pre-Crisis version of the Vega system, one world's male inhabitants look very much like humans. The females look like giant snails. To quote the gamebook, "This seems to work for them."
* In ''Comicbook/{{Legion of Super-Heroes}}'', male Dryads look like large masculine-seeming humanoids made of stone. In some continuities, female Dryads look like large masculine-seeming humanoids made of crystal. (In others they look like the male dryads with narrower waists and NonMammalMammaries.)



* Somewhat inverted in Donald Duck Comics. While in most real duck species, males have brighter colores feathers than females, nearly all of the ducks in the comics are white and gender differences are only visible in clothing and eyelashes.



* ''ComicBook/RomSpaceKnight's'' enemies the Dire Wraiths come in two flavors: the technology-using males, who look like ugly, fanged, gangly-limbed Pillsbury Doughboys; and the sorcery-using females, who are pure {{Starfish Alien}}s.
** The Dire Wraiths are eventually revealed to be offshoots of the [[ComicBook/FantasticFour Skrulls]]. For a race of [[VoluntaryShapeshifting shapeshifters]], appearance isn't that important.
* In the pre-Crisis version of the Vega system, one world's male inhabitants look very much like humans. The females look like giant snails. To quote the gamebook, "This seems to work for them."
* In Phil Foglio's ''ComicBook/XXXenophile'', Martian females are all gorgeous, buxom, four-armed women, and the males are tiny, squat, furry, mostly shapeless (and, incidentally, ''non-sapient'') hexapods with disproportionately large sex organs.
** This is then given an extra twist at the end of the story. After making "First Contact" with a human explorer, a giant [[HumongousMecha battlesuit]] bursts into the room- and the Martians assume that the giant robot must be a human female.
** Huldra (female [[AllTrollsAreDifferent trolls]]), in the story ''A Beautiful Tale'', were [[SuperStrength scary-powerful]] {{Cute Monster Girl}}s with [[CuteLittleFangs cute little]] ''[[CuteLittleFangs shark teeth]]'' and long tufted prehensile tails. We never actually see a male troll... but a human character who [[TakeOurWordForIt has]] infers that humans must not look dimorphic at ''all'' to trolls. (She's wrong; the huldra is fully aware that she's female and ''still'' wants to marry her. [[GirlsLove With all that that implies]].)



* In ''WesternAnimation/{{Ben 10}}'' fanfic ''[[https://www.fanfiction.net/s/4267279/1/Hero-High-Sphinx-Academy Hero High Sphinx Academy]]'', Alex reveals that [[spoiler: Nicole is actually a hybrid of a rare alien that has the ability to heal virtually any injury and her skills can be used to save Ren]]. Ben then calls Alex out on this because he states he could have just turned into said alien and avoided all of this. Alex reveals that this ability is only found in the females of their species, whereas Ben can only turn into the males of that species.



* In ''WesternAnimation/{{Ben 10}}'' fanfic ''[[https://www.fanfiction.net/s/4267279/1/Hero-High-Sphinx-Academy Hero High Sphinx Academy]]'', Alex reveals that [[spoiler: Nicole is actually a hybrid of a rare alien that has the ability to heal virtually any injury and her skills can be used to save Ren]]. Ben then calls Alex out on this because he states he could have just turned into said alien and avoided all of this. Alex reveals that this ability is only found in the females of their species, whereas Ben can only turn into the males of that species.



* ''Franchise/StarWars'':
** The Devaronians (See picture [[http://static.tvtropes.org/pmwiki/pub/images/200px-Devaronians.jpg here]]). The males look like devils. Hairless, with pointed teeth and large triangular horns. Also kind of small. The females are tall, hornless, covered in thick fur, and look like humanoid lemurs.
* ''Franchise/StarTrekExpandedUniverse'':
** The novelization of ''Film/StarTrekIVTheVoyageHome'' would have you believe that [[http://en.memory-alpha.org/wiki/File:Saratoga_helmsman,_2286.jpg this]] is a male [[http://images3.wikia.nocookie.net/memoryalpha/en/images/2/26/Ilia.jpg Deltan]]. No other source corroborates this, and it can be assumed to be an error. The "male Deltan" is later established as an Efrosian, the only other seen member of the species being the Federation President in the ''Star Trek VI'', due to reuse of makeup. In the ''Literature/StarTrekTitan'' novels, the Efrosians come from "Efros Delta", so you ''could'' call them Deltans, but they aren't ''those'' Deltans.
** Downplayed with the Gorn. Rather than NonMammalMammaries, female [[LizardFolk Gorn]] are distinguished by simply being bigger than male Gorn. Unfortunately Gorn also never stop growing until they die, so an old Gorn male could potentially be mistaken for a young Gorn female or vice versa.
* In the goofy ''Film/MomAndDadSaveTheWorld'', the nonhuman natives of Spengo have males with dog-heads and females with fish-heads.



* The M.U.T.O.s in ''Film/{{Godzilla 2014}}''. The male has four legs and wings but is relatively small in size compared to Godzilla (about the size of a hawk if Godzilla was human-scaled), while the female is Godzilla's size and has six legs but cannot fly. However,in a subversion, the two are pretty much identical in appearance and recognizable as the same species. This is very similar to real-life insects, especially parasitic wasps, glow-worms, and lubber grasshoppers.



* In ''Zone Troopers'', a group of American soldiers in WWII discover crashed aliens in Axis territory. The males are tall, pretty, blue-skinned Aryans. The females, as it's later discovered, [[spoiler:are hairy bug-eyed mole people]]. Needless to say, the soldiers had a bit of a shock with that revelation.

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* In ''Zone Troopers'', a group the goofy ''Film/MomAndDadSaveTheWorld'', the nonhuman natives of American soldiers in WWII discover crashed aliens in Axis territory. The Spengo have males are tall, pretty, blue-skinned Aryans. The females, as it's later discovered, [[spoiler:are hairy bug-eyed mole people]]. Needless to say, the soldiers had a bit of a shock with that revelation.dog-heads and females with fish-heads.



* The M.U.T.O.s in ''Film/{{Godzilla 2014}}''. The male has four legs and wings but is relatively small in size compared to Godzilla (about the size of a hawk if Godzilla was human-scaled), while the female is Godzilla's size and has six legs but cannot fly. However,in a subversion, the two are pretty much identical in appearance and recognizable as the same species. This is very similar to real-life insects, especially parasitic wasps, glow-worms, and lubber grasshoppers.

to:

* ''Franchise/StarTrekExpandedUniverse'':
**
The M.U.T.O.s in ''Film/{{Godzilla 2014}}''. The novelization of ''Film/StarTrekIVTheVoyageHome'' would have you believe that [[http://en.memory-alpha.org/wiki/File:Saratoga_helmsman,_2286.jpg this]] is a male has four legs [[http://images3.wikia.nocookie.net/memoryalpha/en/images/2/26/Ilia.jpg Deltan]]. No other source corroborates this, and wings it can be assumed to be an error. The "male Deltan" is later established as an Efrosian, the only other seen member of the species being the Federation President in the ''Star Trek VI'', due to reuse of makeup. In the ''Literature/StarTrekTitan'' novels, the Efrosians come from "Efros Delta", so you ''could'' call them Deltans, but is relatively small in size compared to Godzilla (about they aren't ''those'' Deltans.
** Downplayed with
the size of a hawk if Godzilla was human-scaled), while the Gorn. Rather than NonMammalMammaries, female is Godzilla's size [[LizardFolk Gorn]] are distinguished by simply being bigger than male Gorn. Unfortunately Gorn also never stop growing until they die, so an old Gorn male could potentially be mistaken for a young Gorn female or vice versa.
* ''Franchise/StarWars'':
** The Devaronians (See picture [[http://static.tvtropes.org/pmwiki/pub/images/200px-Devaronians.jpg here]]). The males look like devils. Hairless, with pointed teeth
and has six legs but cannot fly. However,in a subversion, large triangular horns. Also kind of small. The females are tall, hornless, covered in thick fur, and look like humanoid lemurs. (Although, with the two Great Decanonization, this may no longer be the case.)
* In ''Zone Troopers'', a group of American soldiers in WWII discover crashed aliens in Axis territory. The males
are pretty much identical in appearance and recognizable tall, pretty, blue-skinned Aryans. The females, as it's later discovered, [[spoiler:are hairy bug-eyed mole people]]. Needless to say, the same species. This is very similar to real-life insects, especially parasitic wasps, glow-worms, and lubber grasshoppers.soldiers had a bit of a shock with that revelation.



* Weird exception: With all the StarfishAliens in Creator/WayneBarlowe's ''Literature/{{Expedition}}'', it's interesting to note that this trope is hardly used ''at all''. Indeed, it's often hard to tell if the terms "male" and "female" even apply; many species are functionally hermaphroditic, and mating impregnates both individuals. The closest thing would be the female [[http://waynebarlowe.wordpress.com/artwork/expedition/ Sacback]], who lives her adult life buried underground as her male counterpart roams around finding food for her. Other creatures make up for it by having [[BizarreAlienBiology bizarre life-cycles]] (the Emperor Sea Strider, a giant ocean-going beast starts out as a tiny bug-like flyer, for example).



* The Termagant Trogs in ''Literature/TheEdgeChronicles''. The dominant females are massive hulking bald Amazons. Their husbands are skinny, shrimpy and rather pallid creatures usually kept locked up.
** As if that wasn't weird enough...when the females come of age, they undergo an induced {{Metamorphosis}} from sweet, ethereal little redheaded girls into the aforementioned bald (and [[MeaningfulName bad-tempered]]) Amazons. [[spoiler:If they miss the associated ceremony, they're ''[[NotGrowingUpSucks stuck]]'' in the juvenile form.]]
* In David Gerrold's ''Literature/TheWarAgainstTheChtorr'' series, the bunnydogs/bunnymen and libbits were eventually discovered to be the male and female of the same species.
** It's heavily implied that [[spoiler: the entire Chtorran "ecology" may not have the concept of "species" at all.]]
* ''Literature/MythAdventures'' by Robert Asprin includes a dimension called Trollia, where the men are [[AllTrollsAreDifferent Trolls]] (enormous, warty, frightening creatures right out of a fairy tale) and the women are [[FanService Trollops]] (gorgeous and human-looking except for green-tinged skin and hair). Despite their smaller size, the women are as strong or stronger than the males.
* Creator/TheodoreSturgeon's "The World Well Lost" centers on a pair of fugitive "[[YaoiGuys loverbirds]]" from the planet Dirbanu, which has shunned contact with Earth. The loverbirds are initially assumed to be a male and female, but they manage to explain, via some illustrations, that male and female Dirbanu are vastly different in appearance. In fact, the main reason why the Dirbanu dislike humans is due to homophobia, because they perceive all human relationships as being homosexual.
* The Cygnans in the novel ''The Jupiter Theft'' had human-sized females and insect-like parasitic males that were permanently attached to the females.
* ''Literature/KnownSpace'':
** The Kzinti are [[BeastMan catlike people]], and while the males are of humanlike intelligence, the females are not. However, ancient Kzinti females ''were'' entirely sapient--their current state is the result of intentional breeding for unintelligent women, with the help of genetic engineering technology. That's what happens when you uplift a bronze age species. Strangely enough, Kzinti (in Man-Kzin Wars) consider the human sexes to be separate alien species, based on behavioral differences. A human female (Manrrett) is considered to have apparently faster reflexes, higher pain tolerance, and greater intellectual insight, than a human male (Man).
** The Puppeteers, who are already fairly strange-looking, are a subversion. What they refer to as "females" are actually a different, non-sentient species with its own males and females; true Puppeteers are parasitoids, with both sexes sporting similar-looking genitalia used to [[FaceFullOfAlienWingWong deposit gametes in the flesh of a host "female"]].
** Grogs. The adults are large furry cones with a mouth, which cannot move from the rock they attach themselves to. Young females are something like alien bulldogs, and young males are akin to chihuahua, neither of which are sapient. Adults telepathically control the young into breeding, and use the same telepathy to force prey animals to leap into their mouths, since giant immobile cones aren't good at hunting.
* In ''Literature/{{Flatland}}'', men are polygons (whose number of sides and symmetry indicates their social class) and all women are single lines-- hysterical, dangerously sharp, and not too bright. (The blatant sexism and classism is a satire of the attitudes that people actually had when it was written, as explained in a foreword added by Abbot when people missed this.) Other details of their physiology, including how they reproduce, are never explained. In ''Flatterland'' (a 2001 sequel by Ian Stewart), it is implied that the females utilize the males in detaching a segment after sometimes folding the segment into a new shape with roughly the same number of sides as the male. The females are also confirmed to be multi-sided beings that are rotated into a third dimension, [[VoodooShark which just brings up even more questions, including already-answered questions, the answers to which were suddenly made invalid]].



* Inverted in Creator/TerryPratchett's ''Literature/{{Discworld}}'', where [[OurDwarvesAreAllTheSame male and female dwarfs look pretty much identical]]. Both males and females have beards and dress identically in lots of layers of thick clothes and chainmail. In fact dressing noticeably "feminine" is considered outrageously shocking. A large part of Dwarven courtship involves tactfully finding out what sex the other dwarf is...
** Later novels have Dwarf society slightly imitating humans, with female dwarfs adopting TertiarySexualCharacteristics for style and comfort. A discreet ribbon in the beard, steel-heeled boots, chain mail that doesn't chafe...
** Played straight with the pictsies, tiny BeePeople whose female breeders ("keldas") start out the same size as males, but grow twice as tall and spherically-fat after a lifetime of birthing hundreds of offspring. A kelda's rule over her clan is absolute, as she's mother to most and wiser than any.
*** Which isn't saying much as male Pictsies are impulsive and slow to think, even for a ProudWarriorRace. They'd probably all be dead without a kelda to keep them in line.
** Played straight with the [[TheIgor Igor]] clan, who are human (just barely) and do it intentionally. Both male and female Igors are brilliant surgeons who incorporate body parts from corpses into themselves, and can look however they want. Males choose to look like the traditional scarred hunchback, and speak with a heavy lisp. Females (or Igorinas) however follow [[MadScientistsBeautifulDaughter a different trope]], and are quite lovely (though they often keep a nice-looking scar or stitch-mark to signify their heritage).



* Creator/JackChalker's ''Literature/WellWorld'', in all its glory. Too many examples to list.
* The Piggies and Buggers in ''Literature/SpeakerForTheDead''. Especially the piggies. The buggers are about as sexually dimorphic as real bugs. Both species call ''humans'' weird for having sexes so similar that both can perform the same societal function.
** The piggies' life cycle and reproduction is strange enough that it really deserves to be explained in full detail (though put in spoilers). [[spoiler:Both sexes start out small and grublike, but the dimorphism starts quickly. The males develop into the pig-like form that the humans in the story first assume were the only form, but will develop into enormous trees upon death and retain their sentience upon ''being ritually vivisected''.\\
\\
The females, on the other hand, almost all stay small and grublike, and after a certain time are carried by the pig-like males to the trees, and are ''impregnated by said trees'' via pollen. Then, when the young they're carrying are ready to be born, they ''eat their way out of their mother''. In addition, the occasional female will develop into a pig-like form like the males to serve as a matriarch, and eventually also be vivisected to become a "mothertree", which holds all the young and nourishes them with its sap.]] "Bizarre sexual dimophism" doesn't even ''begin'' to cover it.
** There's also the [[spoiler: apparently female-only deer-like creatures that are impregnated by the grass-like male half of the species]]. The xenobiologists spend half the book puzzled over evidence of genetic exchange (which implies the species don't reproduce by parthenogenesis like some [[http://en.wikipedia.org/wiki/Desert_Grassland_Whiptail_Lizard earth species]] do), yet without any apparent presence of males.
*** This is all a relatively recent development from an evolutionary standpoint, caused by [[spoiler:the Descolada, a highly-adaptable virus that literally unravels DNA strands. The only things that can survive it are those who have adapted to use it]].

to:

* Creator/JackChalker's ''Literature/WellWorld'', In Creator/FrankHerbert's ''Franchise/{{Dune}}'' series, [[spoiler:[[Literature/HereticsOfDune Tleilaxu females]] have been genetically altered, and serve as their axlotl tanks, basically giant wombs on life support]].
* ''Literature/TheEdgeChronicles'':
** The Termagant Trogs. The dominant females are massive hulking bald Amazons. Their husbands are skinny, shrimpy and rather pallid creatures usually kept locked up.
*** As if that wasn't weird enough...when the females come of age, they undergo an induced {{Metamorphosis}} from sweet, ethereal little redheaded girls into the aforementioned bald (and [[MeaningfulName bad-tempered]]) Amazons. [[spoiler:If they miss the associated ceremony, they're ''[[NotGrowingUpSucks stuck]]''
in the juvenile form.]]
** Female shrykes are sadistic [[FeatheredFiend humanoid birds of prey]] with deadly weapons and [[NaturalWeapon even deadlier claws and beaks]]. Male shrykes are small and frail, with dull plumage and duller personality, and usually take care of mundane tasks while the females wage war and enslave orphans.
* In ''Literature/{{Everworld}}'', the Hetwan males are vaguely humanoid InsectoidAliens, while the females are described as transparent bags of organs with wings. How they reproduce: Hetwan males tear the females apart and eat them, and new Hetwan form at the males' waist during the process. [[{{Squick}} Ugh]].
* Weird exception: With
all its glory. Too the StarfishAliens in Creator/WayneBarlowe's ''Literature/{{Expedition}}'', it's interesting to note that this trope is hardly used ''at all''. Indeed, it's often hard to tell if the terms "male" and "female" even apply; many examples to list.
* The Piggies and Buggers in ''Literature/SpeakerForTheDead''. Especially the piggies. The buggers are about as sexually dimorphic as real bugs. Both
species call ''humans'' weird are functionally hermaphroditic, and mating impregnates both individuals. The closest thing would be the female [[http://waynebarlowe.wordpress.com/artwork/expedition/ Sacback]], who lives her adult life buried underground as her male counterpart roams around finding food for her. Other creatures make up for it by having sexes so similar [[BizarreAlienBiology bizarre life-cycles]] (the Emperor Sea Strider, a giant ocean-going beast starts out as a tiny bug-like flyer, for example).
* In ''Literature/{{Flatland}}'', men are polygons (whose number of sides and symmetry indicates their social class) and all women are single lines-- hysterical, dangerously sharp, and not too bright. (The blatant sexism and classism is a satire of the attitudes
that both can perform the same societal function.
** The piggies' life cycle and reproduction is strange enough that
people actually had when it really deserves to be was written, as explained in full detail (though put in spoilers). [[spoiler:Both sexes start out small and grublike, but the dimorphism starts quickly. The males develop into the pig-like form a foreword added by Abbot when people missed this.) Other details of their physiology, including how they reproduce, are never explained. In ''Flatterland'' (a 2001 sequel by Ian Stewart), it is implied that the humans in the story first assume were the only form, but will develop into enormous trees upon death and retain their sentience upon ''being ritually vivisected''.\\
\\
The females, on the other hand, almost all stay small and grublike, and after a certain time are carried by the pig-like males to the trees, and are ''impregnated by said trees'' via pollen. Then, when the young they're carrying are ready to be born, they ''eat their way out of their mother''. In addition, the occasional female will develop into a pig-like form like
females utilize the males to serve in detaching a segment after sometimes folding the segment into a new shape with roughly the same number of sides as a matriarch, and eventually the male. The females are also confirmed to be vivisected to become a "mothertree", which holds all the young and nourishes them with its sap.]] "Bizarre sexual dimophism" doesn't even ''begin'' to cover it.
** There's also the [[spoiler: apparently female-only deer-like creatures
multi-sided beings that are impregnated by rotated into a third dimension, [[VoodooShark which just brings up even more questions, including already-answered questions, the grass-like male half of the species]]. The xenobiologists spend half the book puzzled over evidence of genetic exchange (which implies the answers to which were suddenly made invalid]].
* Creator/JohnVarley's ''Literature/GaeaTrilogy'' features a dimorphic intelligent
species don't reproduce by parthenogenesis like some [[http://en.wikipedia.org/wiki/Desert_Grassland_Whiptail_Lizard earth species]] do), yet without any apparent presence of males.
*** This is all a relatively recent development
in which the gas-inflated males are living blimps and the deep-diving females are organic submarines. They begin life as sexless, snakelike animals, then choose which adult sex to metamorphose into when their consciousness and race-memory emerges. Mating takes place at the ocean's surface, aside from an evolutionary standpoint, caused by [[spoiler:the Descolada, a highly-adaptable virus that literally unravels DNA strands. The only things that can survive it are those who have adapted to use it]].which the two sexes never interact.



* In David Brin's ''Literature/{{Uplift}}'' series:
** In the ''Uplift Storm'' trilogy, male urs are much smaller than females, and generally less intelligent (though sapient; a male urs is a secondary character in the series). Females have pouches to carry their mate around.

to:

* In David Brin's ''Literature/{{Uplift}}'' series:
Literature/InCryptid this crops up among certain species of cryptid.
** The dragon species and the related human-appearing dragon princess species [[spoiler:are actually male and female dragons. This played a part in enabling the female dragons to survive as they could hide among the humans after the male dragons were killed by the Covenant of St George. They have since been prolonging their survival by a form of parthenogenesis, but since the discovery of a male dragon, William, under New York, the species appears to be reviving.]]
** The female wadjets are human-appearing, while the male wadjets resemble existing species of cobras. This enables the males to hide among non-sentient snakes (even in a zoo) while avoiding the Covenant.
* The Cygnans in the novel ''The Jupiter Theft'' had human-sized females and insect-like parasitic males that were permanently attached to the females.
* ''Literature/KnownSpace'':
** The Kzinti are [[BeastMan catlike people]], and while the males are of humanlike intelligence, the females are not. However, ancient Kzinti females ''were'' entirely sapient--their current state is the result of intentional breeding for unintelligent women, with the help of genetic engineering technology. That's what happens when you uplift a bronze age species. Strangely enough, Kzinti (in Man-Kzin Wars) consider the human sexes to be separate alien species, based on behavioral differences. A human female (Manrrett) is considered to have apparently faster reflexes, higher pain tolerance, and greater intellectual insight, than a human male (Man).
** The Puppeteers, who are already fairly strange-looking, are a subversion. What they refer to as "females" are actually a different, non-sentient species with its own males and females; true Puppeteers are parasitoids, with both sexes sporting similar-looking genitalia used to [[FaceFullOfAlienWingWong deposit gametes in the flesh of a host "female"]].
** Grogs. The adults are large furry cones with a mouth, which cannot move from the rock they attach themselves to. Young females are something like alien bulldogs, and young males are akin to chihuahua, neither of which are sapient. Adults telepathically control the young into breeding, and use the same telepathy to force prey animals to leap into their mouths, since giant immobile cones aren't good at hunting.
* ''Unicorns'' are depicted this way in Charlie Stross' [[Literature/TheLaundrySeries Laundry Files]] novella, ''[[http://www.tor.com/stories/2013/09/equoid Equoid]]''. Males resemble extremely poisonous cone snails, while fertile females resemble cute, tiny horses. A fertilized female, with the male attached, eventually grows into a massive, gelatinous, immobile ''[[EldritchAbomination thing]]'' of no small sorcerous power, using the entranced little girl to draw in other humans for it to eat: one such experience was revealed to have traumatized H. P. Lovecraft for life. [[spoiler:Worse, near the end of its spawning cycle, the fertilized female can think and speak.]]
* Similar to Discworld, ''Literature/LordOfTheRings'' inverts the trope with the dwarf race, with it being stated that female dwarves are often mistaken for men due to being similar to the males in voice and appearance. As every male dwarf we encounter in the book has a prominent beard, some readers have interpreted this as meaning that the female dwarves even have beards.
** In the ''Uplift Storm'' trilogy, films, this became a rather comedic scene where Gimli humorously explains this phenomenon to a human woman. The human woman (Éowyn) then turns around and looks at Aragorn to see if Gimli is pulling her leg, and he mouths, "It's the beards," and gestures at his chin.
** Confirmed in ''Literature/TheSilmarillion'', which says "For the Naugrim have beards from the beginning of their lives,
male urs are much smaller than females, and generally less intelligent (though sapient; a male urs is a secondary character female alike."
* In ''Literature/ManAfterMan'', one species of post-''Homo sapiens'' hominid developed the ability to hibernate. As males slept for most of the year, whereas females remained awake to nurse their young except
in the series). Females depths of winter, the sedentary males wound up having a lifespan several times as long as that of the nomadic females.
* ''Medea: Harlan's World'' was a collaboration between a number of major SF writers to create a single setting, and a series of short stories set on the titular moon. In ''Flare Time'' by Creator/LarryNiven, the reproductive cycle of the native sentients known as fuxes is described. They start off as six-legged females. At around seven they
have pouches to carry their mate around.first litter, during which their rear body segment tears off, leaving them as four-legged females. The hindquarters contain the eggs, and function as a nest which the newborns eat their way out of. Around seventeen they have a second litter, leaving them as two-legged ''males'', with the male organs exposed through the loss of the second body segment. The male guards the nest until the young are born, then goes into heat for about three years, and eventually ends up a 'post-male'.



* Bob Shaw's "Warren Peace" has the Squelchers, an alien race with no less then six different sexes, each one with its own unique appearance, and with a reproductive cycle where each sex fertilizes the others in turn. The forms look so different that, to the vast majority of the universe, the species only consists of the fourth sex, which resembles an orange haired saggy sasquatch (kind of like a blown up balloon that's developed a slow leak) with multiple eyes in a ring around its head (usually covered by its fur), oversized feet that let it wade on water, and two giant red nipple-like gamete sacs positioned one above the other on its torso. The fifth sex, the only other one mentioned, is described as being indistinguishible from a tree, except for the presence of a pair of two dual-pronged ovipositors (they look almost identical to staples) sprouting from its trunk.
* Inverted in Creator/TerryPratchett's ''Literature/{{Discworld}}'', where [[OurDwarvesAreAllTheSame male and female dwarfs look pretty much identical]]. Both males and females have beards and dress identically in lots of layers of thick clothes and chainmail. In fact dressing noticeably "feminine" is considered outrageously shocking. A large part of Dwarven courtship involves tactfully finding out what sex the other dwarf is...
** Later novels have Dwarf society slightly imitating humans, with female dwarfs adopting TertiarySexualCharacteristics for style and comfort. A discreet ribbon in the beard, steel-heeled boots, chain mail that doesn't chafe...
** Played straight with the pictsies, tiny BeePeople whose female breeders ("keldas") start out the same size as males, but grow twice as tall and spherically-fat after a lifetime of birthing hundreds of offspring. A kelda's rule over her clan is absolute, as she's mother to most and wiser than any.
*** Which isn't saying much as male Pictsies are impulsive and slow to think, even for a ProudWarriorRace. They'd probably all be dead without a kelda to keep them in line.
** Played straight with the [[TheIgor Igor]] clan, who are human (just barely) and do it intentionally. Both male and female Igors are brilliant surgeons who incorporate body parts from corpses into themselves, and can look however they want. Males choose to look like the traditional scarred hunchback, and speak with a heavy lisp. Females (or Igorinas) however follow [[MadScientistsBeautifulDaughter a different trope]], and are quite lovely (though they often keep a nice-looking scar or stitch-mark to signify their heritage).
* Similar to Discworld, ''Literature/LordOfTheRings'' inverts the trope with the dwarf race, with it being stated that female dwarves are often mistaken for men due to being similar to the males in voice and appearance. As every male dwarf we encounter in the book has a prominent beard, some readers have interpreted this as meaning that the female dwarves even have beards.
** In the films, this became a rather comedic scene where Gimli humorously explains this phenomenon to a human woman. The human woman (Éowyn) then turns around and looks at Aragorn to see if Gimli is pulling her leg, and he mouths, "It's the beards," and gestures at his chin.
** Confirmed in ''Literature/TheSilmarillion'', which says "For the Naugrim have beards from the beginning of their lives, male and female alike."



* In Creator/FrankHerbert's ''Franchise/{{Dune}}'' series, [[spoiler:[[Literature/HereticsOfDune Tleilaxu females]] have been genetically altered, and serve as their axlotl tanks, basically giant wombs on life support]].

to:

* In Creator/FrankHerbert's ''Franchise/{{Dune}}'' series, [[spoiler:[[Literature/HereticsOfDune Tleilaxu females]] have been genetically altered, ''Literature/MythAdventures'' by Robert Asprin includes a dimension called Trollia, where the men are [[AllTrollsAreDifferent Trolls]] (enormous, warty, frightening creatures right out of a fairy tale) and serve as the women are [[FanService Trollops]] (gorgeous and human-looking except for green-tinged skin and hair). Despite their axlotl tanks, basically giant wombs on life support]].smaller size, the women are as strong or stronger than the males.



* In ''Literature/{{Everworld}}'', the Hetwan males are vaguely humanoid InsectoidAliens, while the females are described as transparent bags of organs with wings. How they reproduce: Hetwan males tear the females apart and eat them, and new Hetwan form at the males' waist during the process. [[{{Squick}} Ugh]].
* In Edgar Rice Burroughs's ''Literature/{{Tarzan}}'' series, the people of the lost city of Opar consist of a tribe of stunted, hairy, almost apelike men ruled over by a beautiful, entirely human-looking woman. It's implied that the inhabitants degenerated by mating with great apes, but somehow the degeneration didn't affect females the way it did males.
* In ''Literature/ManAfterMan'', one species of post-''Homo sapiens'' hominid developed the ability to hibernate. As males slept for most of the year, whereas females remained awake to nurse their young except in the depths of winter, the sedentary males wound up having a lifespan several times as long as that of the nomadic females.
* Creator/JohnVarley's ''Literature/GaeaTrilogy'' features a dimorphic intelligent species in which the gas-inflated males are living blimps and the deep-diving females are organic submarines. They begin life as sexless, snakelike animals, then choose which adult sex to metamorphose into when their consciousness and race-memory emerges. Mating takes place at the ocean's surface, aside from which the two sexes never interact.
* In [[Creator/SergeyLukyanenko Sergey Lukyanenko's]] ''Literature/{{Spectrum}}'', the main character meets several members of a race of [[TheReptilians [=Reptilians=]]] (according to the book cover, they look like [[Series/BabylonFive Narns]]). Later, his LoveInterest explains that the non-sapient animals they travel with are actually their females, as she saw one of the aliens mating with one of the animals. That or bestiality. The cause for this appears to be an ancient cataclysm that affected all known races, causing many of the bizarre biological and psychological features of the aliens.
** In ''Today, Mom'' there are genetically engineered sphinxes: lion-sized sentient beings created to survive on Venus to terraform it to human-habitable conditions. The males were working on Venus, the females were kept hidden on Earth. One day males revolted, declared independence and smuggled females to Venus. They were very shocked to learn that [[spoiler:the females are ordinary, non-sentient domestic cats]]. At one point a sphinx shows his family portrait with his mom and two sisters.
** In ''Negotiators'' it's humans who are bizarre. Aliens cannot believe there can be such huge psychological differences between genders and disregard the information as savage chauvinism. [[spoiler:But it's the habit to come to terms with people you don't fully understand, [[HumansAreDiplomats what makes humans the best negotiators]].]]
* In the ''[[Literature/TheSteerswoman Steerswoman]]'' series, female demons are tall, spray acid from under their arms, and can make sculptures (out of a wax-like substance that their bodies produce). Male demons are much shorter and cannot make these sculptures. [[spoiler:Since these sculptures are how demons communicate, this is a major social barrier.]]

to:

* In ''Literature/{{Everworld}}'', the Hetwan males are vaguely humanoid InsectoidAliens, while ''Literature/ParadoxTrilogy'', the females are described as transparent bags of organs with wings. How they reproduce: Hetwan males tear the females apart and eat them, and new Hetwan form at the males' waist during the process. [[{{Squick}} Ugh]].
* In Edgar Rice Burroughs's ''Literature/{{Tarzan}}'' series, the people of the lost city of Opar consist of a tribe of stunted, hairy, almost apelike men ruled over by a beautiful, entirely human-looking woman. It's implied that the inhabitants degenerated by mating with great apes, but somehow the degeneration didn't affect females the way it did males.
* In ''Literature/ManAfterMan'', one species of post-''Homo sapiens'' hominid developed the ability to hibernate. As males slept for most of the year, whereas females remained awake to nurse their young except in the depths of winter, the sedentary males wound up having a lifespan several times as long as that of the nomadic females.
* Creator/JohnVarley's ''Literature/GaeaTrilogy'' features a dimorphic intelligent species in which the gas-inflated males are living blimps and the deep-diving females are organic submarines. They begin life as sexless, snakelike animals, then choose which adult sex to metamorphose into when their consciousness and race-memory emerges. Mating takes place at the ocean's surface, aside from which the two sexes never interact.
* In [[Creator/SergeyLukyanenko Sergey Lukyanenko's]] ''Literature/{{Spectrum}}'', the main character meets several members of a race of [[TheReptilians [=Reptilians=]]] (according to the book cover, they look like [[Series/BabylonFive Narns]]). Later, his LoveInterest explains that the non-sapient animals they travel with are actually their females, as she saw one of the aliens mating with one of the animals. That or bestiality. The cause for this appears to be an ancient cataclysm that affected all known races, causing many of the bizarre biological and psychological features of the aliens.
** In ''Today, Mom'' there are
xith'cal have genetically engineered sphinxes: lion-sized sentient beings created to survive on Venus to terraform it to human-habitable conditions. The themselves so that males were working on Venus, the females were kept hidden on Earth. One day males revolted, declared independence and smuggled females to Venus. They were very shocked to learn that [[spoiler:the females are ordinary, non-sentient domestic cats]]. At one point a sphinx shows his family portrait with his mom and two sisters.
** In ''Negotiators'' it's humans who are bizarre. Aliens cannot believe there can be such huge psychological differences between genders and disregard the information as savage chauvinism. [[spoiler:But it's the habit to come to terms with people you don't fully understand, [[HumansAreDiplomats what makes humans the best negotiators]].]]
* In the ''[[Literature/TheSteerswoman Steerswoman]]'' series, female demons are tall, spray acid from under their arms, and can make sculptures (out of a wax-like substance that their bodies produce). Male demons
specialized for different tasks. Males are much shorter larger and cannot make these sculptures. [[spoiler:Since these sculptures serve as warriors, while females are how demons communicate, this smaller and serve as scientists. Maturing xith'cal are able to choose which gender they will become, and may even decide to remain genderless, though doing so is a major social barrier.]]uncommon.



* ''Medea: Harlan's World'' was a collaboration between a number of major SF writers to create a single setting, and a series of short stories set on the titular moon. In ''Flare Time'' by Creator/LarryNiven, the reproductive cycle of the native sentients known as fuxes is described. They start off as six-legged females. At around seven they have their first litter, during which their rear body segment tears off, leaving them as four-legged females. The hindquarters contain the eggs, and function as a nest which the newborns eat their way out of. Around seventeen they have a second litter, leaving them as two-legged ''males'', with the male organs exposed through the loss of the second body segment. The male guards the nest until the young are born, then goes into heat for about three years, and eventually ends up a 'post-male'.

to:

* ''Medea: Harlan's World'' was a collaboration between a number of major SF writers to create a single setting, The Piggies and a series of short stories set Buggers in ''Literature/SpeakerForTheDead''. Especially the piggies. The buggers are about as sexually dimorphic as real bugs. Both species call ''humans'' weird for having sexes so similar that both can perform the same societal function.
** The piggies' life cycle and reproduction is strange enough that it really deserves to be explained in full detail (though put in spoilers). [[spoiler:Both sexes start out small and grublike, but the dimorphism starts quickly. The males develop into the pig-like form that the humans in the story first assume were the only form, but will develop into enormous trees upon death and retain their sentience upon ''being ritually vivisected''.\\
\\
The females,
on the titular moon. In ''Flare Time'' other hand, almost all stay small and grublike, and after a certain time are carried by Creator/LarryNiven, the reproductive cycle of pig-like males to the native sentients known as fuxes is described. They start off as six-legged females. At around seven trees, and are ''impregnated by said trees'' via pollen. Then, when the young they're carrying are ready to be born, they have their first litter, during which their rear body segment tears off, leaving them as four-legged females. The hindquarters contain the eggs, and function as a nest which the newborns eat ''eat their way out of. Around seventeen they have a second litter, leaving them as two-legged ''males'', with of their mother''. In addition, the male organs exposed through the loss of the second body segment. The male guards the nest until the young are born, then goes occasional female will develop into heat for about three years, a pig-like form like the males to serve as a matriarch, and eventually ends up also be vivisected to become a 'post-male'."mothertree", which holds all the young and nourishes them with its sap.]] "Bizarre sexual dimophism" doesn't even ''begin'' to cover it.
** There's also the [[spoiler: apparently female-only deer-like creatures that are impregnated by the grass-like male half of the species]]. The xenobiologists spend half the book puzzled over evidence of genetic exchange (which implies the species don't reproduce by parthenogenesis like some [[http://en.wikipedia.org/wiki/Desert_Grassland_Whiptail_Lizard earth species]] do), yet without any apparent presence of males.
*** This is all a relatively recent development from an evolutionary standpoint, caused by [[spoiler:the Descolada, a highly-adaptable virus that literally unravels DNA strands. The only things that can survive it are those who have adapted to use it]].
* In [[Creator/SergeyLukyanenko Sergey Lukyanenko's]] ''Literature/{{Spectrum}}'', the main character meets several members of a race of [[TheReptilians [=Reptilians=]]] (according to the book cover, they look like [[Series/BabylonFive Narns]]). Later, his LoveInterest explains that the non-sapient animals they travel with are actually their females, as she saw one of the aliens mating with one of the animals. That or bestiality. The cause for this appears to be an ancient cataclysm that affected all known races, causing many of the bizarre biological and psychological features of the aliens.
** In ''Today, Mom'' there are genetically engineered sphinxes: lion-sized sentient beings created to survive on Venus to terraform it to human-habitable conditions. The males were working on Venus, the females were kept hidden on Earth. One day males revolted, declared independence and smuggled females to Venus. They were very shocked to learn that [[spoiler:the females are ordinary, non-sentient domestic cats]]. At one point a sphinx shows his family portrait with his mom and two sisters.
** In ''Negotiators'' it's humans who are bizarre. Aliens cannot believe there can be such huge psychological differences between genders and disregard the information as savage chauvinism. [[spoiler:But it's the habit to come to terms with people you don't fully understand, [[HumansAreDiplomats what makes humans the best negotiators]].]]



* In the ''[[Literature/TheSteerswoman Steerswoman]]'' series, female demons are tall, spray acid from under their arms, and can make sculptures (out of a wax-like substance that their bodies produce). Male demons are much shorter and cannot make these sculptures. [[spoiler:Since these sculptures are how demons communicate, this is a major social barrier.]]
* In Edgar Rice Burroughs's ''Literature/{{Tarzan}}'' series, the people of the lost city of Opar consist of a tribe of stunted, hairy, almost apelike men ruled over by a beautiful, entirely human-looking woman. It's implied that the inhabitants degenerated by mating with great apes, but somehow the degeneration didn't affect females the way it did males.
* In David Brin's ''Literature/{{Uplift}}'' series:
** In the ''Uplift Storm'' trilogy, male urs are much smaller than females, and generally less intelligent (though sapient; a male urs is a secondary character in the series). Females have pouches to carry their mate around.
* In David Gerrold's ''Literature/TheWarAgainstTheChtorr'' series, the bunnydogs/bunnymen and libbits were eventually discovered to be the male and female of the same species.
** It's heavily implied that [[spoiler: the entire Chtorran "ecology" may not have the concept of "species" at all.]]



* In the ''Literature/ParadoxTrilogy'', the xith'cal have genetically engineered themselves so that males and females are specialized for different tasks. Males are much larger and serve as warriors, while females are smaller and serve as scientists. Maturing xith'cal are able to choose which gender they will become, and may even decide to remain genderless, though doing so is uncommon.
* ''Unicorns'' are depicted this way in Charlie Stross' [[Literature/TheLaundrySeries Laundry Files]] novella, ''[[http://www.tor.com/stories/2013/09/equoid Equoid]]''. Males resemble extremely poisonous cone snails, while fertile females resemble cute, tiny horses. A fertilized female, with the male attached, eventually grows into a massive, gelatinous, immobile ''[[EldritchAbomination thing]]'' of no small sorcerous power, using the entranced little girl to draw in other humans for it to eat: one such experience was revealed to have traumatized H. P. Lovecraft for life. [[spoiler:Worse, near the end of its spawning cycle, the fertilized female can think and speak.]]
* In Literature/InCryptid this crops up among certain species of cryptid.
** The dragon species and the related human-appearing dragon princess species [[spoiler:are actually male and female dragons. This played a part in enabling the female dragons to survive as they could hide among the humans after the male dragons were killed by the Covenant of St George. They have since been prolonging their survival by a form of parthenogenesis, but since the discovery of a male dragon, William, under New York, the species appears to be reviving.]]
** The female wadjets are human-appearing, while the male wadjets resemble existing species of cobras. This enables the males to hide among non-sentient snakes (even in a zoo) while avoiding the Covenant.
* Female shrykes in ''Literature/TheEdgeChronicles'' are sadistic [[FeatheredFiend humanoid birds of prey]] with deadly weapons and [[NaturalWeapon even deadlier claws and beaks]]. Male shrykes are small and frail, with dull plumage and duller personality, and usually take care of mundane tasks while the females wage war and enslave orphans.

to:

* In Bob Shaw's "Warren Peace" has the ''Literature/ParadoxTrilogy'', the xith'cal have genetically engineered themselves so that males and females are specialized for Squelchers, an alien race with no less then six different tasks. Males are much larger sexes, each one with its own unique appearance, and serve as warriors, while females are smaller and serve as scientists. Maturing xith'cal are able with a reproductive cycle where each sex fertilizes the others in turn. The forms look so different that, to choose the vast majority of the universe, the species only consists of the fourth sex, which gender they will become, resembles an orange haired saggy sasquatch (kind of like a blown up balloon that's developed a slow leak) with multiple eyes in a ring around its head (usually covered by its fur), oversized feet that let it wade on water, and may even decide two giant red nipple-like gamete sacs positioned one above the other on its torso. The fifth sex, the only other one mentioned, is described as being indistinguishible from a tree, except for the presence of a pair of two dual-pronged ovipositors (they look almost identical to remain genderless, though doing so is uncommon.
staples) sprouting from its trunk.
* ''Unicorns'' Creator/JackChalker's ''Literature/WellWorld'', in all its glory. Too many examples to list.
* Creator/TheodoreSturgeon's "The World Well Lost" centers on a pair of fugitive "[[YaoiGuys loverbirds]]" from the planet Dirbanu, which has shunned contact with Earth. The loverbirds
are depicted this way in Charlie Stross' [[Literature/TheLaundrySeries Laundry Files]] novella, ''[[http://www.tor.com/stories/2013/09/equoid Equoid]]''. Males resemble extremely poisonous cone snails, while fertile females resemble cute, tiny horses. A fertilized initially assumed to be a male and female, with the male attached, eventually grows into a massive, gelatinous, immobile ''[[EldritchAbomination thing]]'' of no small sorcerous power, using the entranced little girl but they manage to draw in other humans for it to eat: one such experience was revealed to have traumatized H. P. Lovecraft for life. [[spoiler:Worse, near the end of its spawning cycle, the fertilized female can think and speak.]]
* In Literature/InCryptid this crops up among certain species of cryptid.
** The dragon species and the related human-appearing dragon princess species [[spoiler:are actually
explain, via some illustrations, that male and female dragons. This played a part Dirbanu are vastly different in enabling appearance. In fact, the female dragons to survive as they could hide among main reason why the Dirbanu dislike humans after the male dragons were killed by the Covenant of St George. They have since been prolonging their survival by a form of parthenogenesis, but since the discovery of a male dragon, William, under New York, the species appears is due to be reviving.]]
** The female wadjets are human-appearing, while the male wadjets resemble existing species of cobras. This enables the males to hide among non-sentient snakes (even in a zoo) while avoiding the Covenant.
* Female shrykes in ''Literature/TheEdgeChronicles'' are sadistic [[FeatheredFiend humanoid birds of prey]] with deadly weapons and [[NaturalWeapon even deadlier claws and beaks]]. Male shrykes are small and frail, with dull plumage and duller personality, and usually take care of mundane tasks while the females wage war and enslave orphans.
homophobia, because they perceive all human relationships as being homosexual.



* This trope is played with in the first season of ''Series/{{Farscape}}'', where a Yenen named Staanz (played by a male actor) turns out to be an attractive ''female'' of the species.



* This trope is played with in the first season of ''Series/{{Farscape}}'', where a Yenen named Staanz (played by a male actor) turns out to be an attractive ''female'' of the species.



* One sketch from ''Series/TheMuppetShow'' showed a mating.. er.. "[[GettingCrapPastTheRadar Galley-oh-Hoop-Hoop ritual]]" of two natives of Planet Koozbane, and they looked nothing alike. (As an aside, the ritual involves the pair getting a running start, charging headlong at each other, colliding and [[StuffBlowingUp blowing up]].)



* One sketch from ''Series/TheMuppetShow'' showed a mating.. er.. "[[GettingCrapPastTheRadar Galley-oh-Hoop-Hoop ritual]]" of two natives of Planet Koozbane, and they looked nothing alike. (As an aside, the ritual involves the pair getting a running start, charging headlong at each other, colliding and [[StuffBlowingUp blowing up]].)
11th Feb '17 10:28:20 PM rva98014
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* All the male sheep in ''Disney/{{Zootopia}}'' have rectangular HellishPupils likes sheep in real life. Bellweather, the only female sheep onscreen, has CartoonyEyes like most other animals.
9th Feb '17 6:29:16 AM kouta
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** Humans' sexual dimorphism isn't as great as that of our near relatives (men are usually about 5" taller 45lbs heavier than their sisters). Gorilla and orangutan males are enormous compared to the females, while male and female gibbons sport different colors of fur, plus an inflatable throat pouch for males of some species. It's even more extreme in the larger monkeys, such as baboons, mandrills, or proboscis monkeys.

to:

** Humans' sexual dimorphism isn't as great as that of our near relatives (men are usually about 5" taller and 45lbs heavier than their sisters). Gorilla and orangutan males are enormous compared to the females, while male and female gibbons sport different colors of fur, plus an inflatable throat pouch for males of some species. It's even more extreme in the larger monkeys, such as baboons, mandrills, or proboscis monkeys.
7th Feb '17 2:48:20 PM AthenaBlue
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* The Martian Queen in ''WesternAnimation/DuckDodgers'' is obviously sexier and more humanoid than any other Martian. However there was a tall, burly male Martian who attempted a coup. Marvin is apparently just the runt of the species...
* The Boudacians (Princess Mandie's species) from ''WesternAnimation/TheFairlyOddparents'': the females look [[GreenSkinnedSpaceBabe human women with yellow skin, purple hair, and antenna]]; the males look werewolves.



* Zane and Zair from ''WesternAnimation/{{Redakai}}'' are a minor example. Despite being siblings (therefore [[GenderEqualsBreed most likely]] the same species), Zane has [[LittleGreenMen green skin]], [[YouGottaHaveBlueHair blue hair]], and darkened eyelids -- while his sister Zair has light red skin, dark red hair, [[AnimalEyes catlike eyes]], and a [[RubberForeheadAliens strangely familiar]] patch of bumps on her forehead.
* ''WesternAnimation/RickAndMorty'' has the Gazorpians, of which the males are large, savage ogre-like creatures with reddish skin and three pairs of arms (one of which takes the place of ears on their heads) who will attempt to mate with [[AnythingThatMoves anything that moves]] and grow up quickly within a day of being born. The females resemble tall humanoid women (save for the extra pairs of arms) and are much more intelligent, empathetic and possess telekinetic abilities. While the males live on Gazorpazorp's surface, the females live seperately in a LadyLand utopia underneath the surface. The Gazorpian population is reproduced via breeding chambers in the form of sexbots that get sent up to the surface for the males to mate with, which are eventually taken underground where the babies' genders and fates are determined, with boys being literally slingshotted out into the surface.
** Oddly enough, Morty Jr is shown to only possess two pairs of arms, including the pair on his head, but this may be due to him being [[HalfHumanHybrid half human]].
* A throwaway gag on ''WesternAnimation/SouthPark'' has a male Gelgamek, a stocky green individual marginally larger than a male human of similar age and social standing, mention that the Gelgamek vagina is three feet wide, and [[VaginaDentata filled with razor-sharp teeth]]. One can only imagine what the rest of the Gelgamek female looks like.
* In ''WesternAnimation/StarWarsTheCloneWars'', Female Dathomirians (Dathomirians are a hybrid between Zabrak and humans), have chalk-white skin and shaved bald heads, resembling Rattataki. Male Dathomirians, however, resemble their Zabrak forefathers (like Darth Maul) with skin tattooed red or gold, and horns. Basically, while the males hardly look any different from regular Zabrak, females lack horns and thus look no different than humans.
** The Terrelian Jango Jumpers are another ''Star Wars'' example. As shown on ''The Clone Wars'', females have human-shaped hands and feet. ''WesternAnimation/StarWarsRebels'' reveals that males have symmetrical four-fingered hands (two fingers, two thumbs) and tridactyl feet.



* ''WesternAnimation/TomAndJerry'' (as well as other Golden Era cartoon short series for that matter) had very FunnyAnimal looking male cats and mice in contrast to the female characters such as Tootles who look like PettingZooPeople. A particularly glaring instance of this can be seen in the short "Muscle Beach Tom", where the girl cat that Tom ([[InterspeciesRomance and Jerry]]) is flirting with more or less looks like a human female with a cat's head. (She doesn't even have a tail!)



* A throwaway gag on ''WesternAnimation/SouthPark'' has a male Gelgamek, a stocky green individual marginally larger than a male human of similar age and social standing, mention that the Gelgamek vagina is three feet wide, and [[VaginaDentata filled with razor-sharp teeth]]. One can only imagine what the rest of the Gelgamek female looks like.
* The Boudacians (Princess Mandie's species) from ''WesternAnimation/TheFairlyOddparents'': the females look [[GreenSkinnedSpaceBabe human women with yellow skin, purple hair, and antenna]]; the males look werewolves.
* In ''WesternAnimation/StarWarsTheCloneWars'', Female Dathomirians (Dathomirians are a hybrid between Zabrak and humans), have chalk-white skin and shaved bald heads, resembling Rattataki. Male Dathomirians, however, resemble their Zabrak forefathers (like Darth Maul) with skin tattooed red or gold, and horns. Basically, while the males hardly look any different from regular Zabrak, females lack horns and thus look no different than humans.
* Zane and Zair from ''WesternAnimation/{{Redakai}}'' are a minor example. Despite being siblings (therefore [[GenderEqualsBreed most likely]] the same species), Zane has [[LittleGreenMen green skin]], [[YouGottaHaveBlueHair blue hair]], and darkened eyelids -- while his sister Zair has light red skin, dark red hair, [[AnimalEyes catlike eyes]], and a [[RubberForeheadAliens strangely familiar]] patch of bumps on her forehead.
* The Martian Queen in ''WesternAnimation/DuckDodgers'' is obviously sexier and more humanoid than any other Martian. However there was a tall, burly male Martian who attempted a coup. Marvin is apparently just the runt of the species...
* ''WesternAnimation/TomAndJerry'' (as well as other Golder Era cartoon short series for that matter) had very FunnyAnimal looking male cats and mice in contrast to the female characters such as Tootles who look like PettingZooPeople. A particularly glaring instance of this can be seen in the short "Muscle Beach Tom", where the girl cat that Tom ([[InterspeciesRomance and Jerry]]) is flirting with more or less looks like a human female with a cat's head. (She doesn't even have a tail!)
* ''WesternAnimation/RickAndMorty'' has the Gazorpians, of which the males are large, savage ogre-like creatures with reddish skin and three pairs of arms (one of which takes the place of ears on their heads) who will attempt to mate with [[AnythingThatMoves anything that moves]] and grow up quickly within a day of being born. The females resemble tall humanoid women (save for the extra pairs of arms) and are much more intelligent, empathetic and possess telekinetic abilities. While the males live on Gazorpazorp's surface, the females live seperately in a LadyLand utopia underneath the surface. The Gazorpian population is reproduced via breeding chambers in the form of sexbots that get sent up to the surface for the males to mate with, which are eventually taken underground where the babies' genders and fates are determined, with boys being literally slingshotted out into the surface.
** Oddly enough, Morty Jr is shown to only possess two pairs of arms, including the pair on his head, but this may be due to him being [[HalfHumanHybrid half human]].
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