History Main / BizarreSexualDimorphism

23rd Oct '17 8:41:03 PM PaulA
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* In Creator/LarryNiven's ''Draco Tavern'' stories, all the Chirpsithra were female. There are males, but the Chirpsithra won't talk about them. In one of the stories, the Chirp males are revealed. [[spoiler:They're the "red demons", essentially mindless beasts.]]

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* In Creator/LarryNiven's ''Draco Tavern'' ''[[Literature/TheDracoTavern Draco Tavern]]'' stories, all the Chirpsithra were female. There are males, but the Chirpsithra won't talk about them. In one of the stories, the Chirp males are revealed. [[spoiler:They're the "red demons", essentially mindless beasts.]]
20th Oct '17 3:22:59 AM ProfessorFrink
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** Another odd inversion are the Phalaropes. For some reason, this group of little Arctic shorebirds have reversed the usual avian gender roles. Females are brightly colored and fight over males, who are drabber and stay with the nest. They have been described elsewhere as "an entire Genus of {{Wholesome Crossdresser}}s."

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** Another odd inversion are the Phalaropes.phalaropes. For some reason, this group of little Arctic shorebirds have reversed the usual avian gender roles. Females are brightly colored and fight over males, who are drabber and stay with the nest. They have been described elsewhere as "an entire Genus genus of {{Wholesome Crossdresser}}s."



** The above is not strictly true. In fact, in all python and boa species, both sexes have small claws, known as spurs, on either side of the cloaca. However, they are larger in males.



* Spotted Hyenas are a case of [[InvertedTrope Bizarre Sexual Monomorphism]]: Females are much larger than the males and have identical-looking genitals to males, with a "pseudopenis" and "pseudo-scrotum". They even have to give birth through it, and it tears apart the first time. Most of the time the hyena's first cub dies during birth because of suffocating within this structure. The other species of hyena don't have these odd traits, and why they evolved this way is a mystery.

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* Spotted Hyenas hyenas are a case of [[InvertedTrope Bizarre Sexual Monomorphism]]: Females are much larger than the males and have identical-looking genitals to males, with a "pseudopenis" and "pseudo-scrotum". They even have to give birth through it, and it tears apart the first time. Most of the time the hyena's first cub dies during birth because of suffocating within this structure. The other species of hyena don't have these odd traits, and why they evolved this way is a mystery.



*** Another thing is that humans don't have a Baculum ([[http://en.wikipedia.org/wiki/Baculum#Absence_in_humans penis bone]]), as one of the only two species of primate (including other apes; they are sporadically present among mammalian species) without. Erection is supported only by blood pressure so, in conjunction with the already over-average size, it means that sexual performance is directly connected to good health (both physical and mental). Which just makes "boner" an ironic name.

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*** Another thing is that humans don't have a Baculum baculum ([[http://en.wikipedia.org/wiki/Baculum#Absence_in_humans penis bone]]), as one of the only two species of primate (including other apes; they are sporadically present among mammalian species) without. Erection is supported only by blood pressure so, in conjunction with the already over-average size, it means that sexual performance is directly connected to good health (both physical and mental). Which just makes "boner" an ironic name.



* Male cervids' antlers, male narwhals' tusks, and many male bovids' horns set them apart from females of their species, although in the cercids' (deers') case this is subverted seasonally when their antlers drop off.

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* Male lions' manes, cervids' antlers, male narwhals' tusks, and many (though not all) male bovids' horns set them apart from females of their species, although in the cercids' cervids' (deers') case this is subverted seasonally when their antlers drop off.off.
** The reindeer is the sole deer species in which both sexes have antlers, though the females' are smaller. The males' are shed after the autumn rut, whilst the females retain theirs through the winter - it's thought this helps them compete for food with the larger males during this harsh season. This also means that all Santa's reindeer are females!
8th Oct '17 7:50:27 PM PaulA
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* In Creator/LarryNiven's ''Draco Tavern'' stories, all the Chirpsithra were female. There are males, but the Chirpsithra won't talk about them.
** In one of the stories, the Chirp males are revealed. [[spoiler: They're the "red demons", essentially mindless beasts.]]
** At least, they are at the current day. Chirps are an '''old''' species. One story features one that's visited Earth before (and looks quite different to the modern ones, and it isn't just her extensive medical modifications, as she's a different height). Her last visit was in the ''Precambrian''.

to:

* In Creator/LarryNiven's ''Draco Tavern'' stories, all the Chirpsithra were female. There are males, but the Chirpsithra won't talk about them.
**
them. In one of the stories, the Chirp males are revealed. [[spoiler: They're [[spoiler:They're the "red demons", essentially mindless beasts.]]
** At least, they are at the current day. Chirps are an '''old''' species. One story features one that's visited Earth before (and looks quite different to the modern ones, and it isn't just her extensive medical modifications, as she's a different height). Her last visit was in the ''Precambrian''.
]]
8th Oct '17 1:25:55 PM MarkusManon
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As explained [[NonMammalMammaries elsewhere]], we primates have certain visual cues we rely on to tell a woman from a man; men are generally taller and more muscular. Women are shorter, more curvaceous and have breasts. This is because we are ''sexually dimorphic'' animals. Sexual dimorphism refers to the differences between two genders other than their sex organs.

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As explained [[NonMammalMammaries elsewhere]], we primates have certain visual cues we rely on to tell a woman from a man; men are generally taller and more muscular. Women are shorter, more curvaceous and have breasts. This is because we are ''sexually dimorphic'' animals. Sexual dimorphism refers to the differences between two genders the sexes other than their sex organs.
4th Oct '17 10:28:38 PM ArcaneAzmadi
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* In ''VideoGame/LeagueOfLegends'' Yordle females look like tiny, pointy-eared, blue-skinned women with white hair -- quite squat and with rather wide faces (depending on the artist) but basically humanoid. Yordle ''males'' on the other hand vary from looking like short gnome-like fellows with massive facial hair (but not blue skin) to resembling bipedal ''hamsters'' -- either way they look nothing like the females. Compare [[http://3.bp.blogspot.com/_L78zEKWCMII/TGo-To68QzI/AAAAAAAAAsg/UxxmussJF3E/s1600/Tristana_Splash_0.jpg Tristana]] with [[http://3.bp.blogspot.com/-dJIqB1T9kgo/TZjM04bFPMI/AAAAAAAAAQY/cst6O1xHjwM/s1600/Teemo_Splash_.jpg Teemo.]] This largely stems from them originally being two separate races (Yordles and Meglings) who were [[{{Retcon}} retconned]] into one.

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* In ''VideoGame/LeagueOfLegends'' Yordle females look like tiny, pointy-eared, blue-skinned tiny women with white hair blueish-purple skin and long, pointed furry ears -- quite squat and with rather wide faces (depending on the artist) but basically humanoid. Yordle ''males'' on the other hand vary from looking like short gnome-like fellows with massive facial hair (but not blue skin) to resembling bipedal ''hamsters'' -- either way they look nothing like the females. Compare [[http://3.bp.blogspot.com/_L78zEKWCMII/TGo-To68QzI/AAAAAAAAAsg/UxxmussJF3E/s1600/Tristana_Splash_0.jpg [[https://vignette.wikia.nocookie.net/leagueoflegends/images/2/29/Tristana_OriginalSkin.jpg/revision/latest?cb=20170615231509 Tristana]] with [[http://3.bp.blogspot.com/-dJIqB1T9kgo/TZjM04bFPMI/AAAAAAAAAQY/cst6O1xHjwM/s1600/Teemo_Splash_.jpg [[https://vignette.wikia.nocookie.net/leagueoflegends/images/3/3b/Teemo_OriginalSkin.jpg/revision/latest?cb=20170615230642 Teemo.]] This largely stems from them originally being two separate races (Yordles and Meglings) who were [[{{Retcon}} retconned]] into one.
30th Sep '17 5:16:16 AM nanakiro
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** A great many birds have brightly colored males and plain, often larger females. In fact, the word for a male hawk or falcon is "tiercel", which comes from the French word for "one third", because male raptors are a third smaller than females. This makes a certain evolutionary sense -- the female has to carry eggs, so a larger body is needed. Males can get away with being smaller (and thus needing less food) because birds generally don't physically fight except in extreme circumstances -- it's too easy to hurt a wing and be crippled. Similarly, males normally are bright and females drab so that a nesting female is hard to spot but a displaying male easy to find. (There is also a theory that some species, like peacocks, are essentially advertising their fitness as a mate by showing off a major handicap -- a big tail says "Hey, I can walk around with ''this'' strapped to my butt and ''still'' avoid predators! I'm an awesome provider!" Zoologists are rather stumped by the peacock - despite what the obvious human assumption would imply about displaying it, actual observance of female peacock's mating preferences don't seem to be consistent with anything about the tail - one tail seems, as far as zoologists can tell, as good as another.) The purpose of the size difference in male and female birds of prey is also to discourage competition for food between a mating pair. The larger female can catch large prey (and have plenty to feed her chicks) without worrying about the small male getting in her way.

to:

** A great many birds have brightly colored males and plain, often larger females. In fact, the word for a male hawk or falcon is "tiercel", which comes from the French word for "one third", because male raptors are a third smaller than females. This makes a certain evolutionary sense -- the female has to carry eggs, so a larger body is needed. Males can get away with being smaller (and thus needing less food) because birds generally don't physically fight except in extreme circumstances -- it's too easy to hurt a wing and be crippled. Similarly, males normally are bright and females drab so that a nesting female is hard to spot but a displaying male easy to find. (There is also a theory that some species, like peacocks, peafowl, are essentially advertising their fitness as a mate by showing off a major handicap -- a big tail says "Hey, I can walk around with ''this'' strapped to my butt and ''still'' avoid predators! I'm an awesome provider!" Zoologists are rather stumped by the peacock - despite what the obvious human assumption would imply about displaying it, actual observance of female peacock's peahen's mating preferences don't seem to be consistent with anything about the tail - one tail seems, as far as zoologists can tell, as good as another.) The purpose of the size difference in male and female birds of prey is also to discourage competition for food between a mating pair. The larger female can catch large prey (and have plenty to feed her chicks) without worrying about the small male getting in her way.
25th Sep '17 9:00:37 PM Trooper924
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Added DiffLines:

** She's also [[TinyGuyHugeGirl taller than Ratchet]], but it isn't clear if it's this or if Angela's just unusually tall for a Lombax (or if Ratchet's just really short).
7th Aug '17 8:48:24 PM PaulA
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* The Agletsch in [[Creator/WilliamHKeithJr Ian Douglas]]'s ''Literature/StarCarrier'' novels are peaceful [[BeePeople spider]]-like creatures whose [[PlanetOfHats hat]] seems to be [[InformationBroker information exchange]] (they don't even have colonies, just trading outposts). In the second book, it's revealed (to the readers, not the characters) that the "spider-like" Agletsch are, in fact, their females. The males are the tiny non-sentient slug-like parasites that all females carry attached to their bodies. The males feed off the females, but fertilize them for reproduction. This is first brought up when a [[FantasticRacism racist]] maître d' of an expensive restaurant tries to kick out two Agletsch who come in, calling them "gentlemen". A main character corrects him, and points out they're "ladies".

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* The Agletsch in [[Creator/WilliamHKeithJr Ian Douglas]]'s Creator/IanDouglas's ''Literature/StarCarrier'' novels are peaceful [[BeePeople spider]]-like creatures whose [[PlanetOfHats hat]] seems to be [[InformationBroker information exchange]] (they don't even have colonies, just trading outposts). In the second book, it's revealed (to the readers, not the characters) that the "spider-like" Agletsch are, in fact, their females. The males are the tiny non-sentient slug-like parasites that all females carry attached to their bodies. The males feed off the females, but fertilize them for reproduction. This is first brought up when a [[FantasticRacism racist]] maître d' of an expensive restaurant tries to kick out two Agletsch who come in, calling them "gentlemen". A main character corrects him, and points out they're "ladies".
3rd Aug '17 12:56:43 AM Jokubas
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** Many of the monster races are like this, most notably the naga. The female naga are humanoid from the waist up, despite aquatic features and an extra pair of arms, and are said to mostly resemble their original elven selves. The male naga, however, only have a single pair of arms, are heavily built, and have draconic heads. Even more, the females are said to mostly retain their original personality, while the males are often portrayed as little more than beasts good for soldiers and little else. At least with the naga, this can be explained through the fact that their creation was not a natural evolution, but a magical transformation by way of EldritchAbomination.

to:

** Many of the monster races are like this, most notably the naga. The female naga are humanoid from the waist up, despite aquatic features and an extra pair of arms, and are said to mostly resemble their original elven selves. The male naga, however, only have a single pair of arms, are heavily built, and have draconic heads. Even more, the females are said to mostly retain their original personality, personality and magical skill, while the males are often portrayed as little more than beasts good for as soldiers and little else. At least with the naga, this can be explained through the fact that their creation was not a natural evolution, but a magical transformation by way of EldritchAbomination.
3rd Aug '17 12:52:05 AM Jokubas
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** Many of the monster races in are like this, most notably the Naga.

to:

** Many of the monster races in are like this, most notably the Naga.naga. The female naga are humanoid from the waist up, despite aquatic features and an extra pair of arms, and are said to mostly resemble their original elven selves. The male naga, however, only have a single pair of arms, are heavily built, and have draconic heads. Even more, the females are said to mostly retain their original personality, while the males are often portrayed as little more than beasts good for soldiers and little else. At least with the naga, this can be explained through the fact that their creation was not a natural evolution, but a magical transformation by way of EldritchAbomination.
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