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- Astro Boy features a race of aliens resembling grasshoppers whose social structure is somewhat extrapolated from grasshopper behavior. For example, it's perfectly legal for them to fight to the death over a mate.
- Sgt. Frog. The title character and every other character from Planet Keron are from an alien race that resembles cartoony anthropomorphic frogs. Many other alien races based on animals appear too, although very often only their head is actually influenced by one animal or the other and their body is completely human.
- Several comedic series, such as Space Pirate Mito and D.I.C.E., have anthropomorphic terra-based animals as aliens or galactic citizens as (generally) lower classes to the humanoids. Often appearing as background characters, pirate crews, and servant/slave races.
- Ch'p, one of the Green Lantern Corps, was a from a race that was a sort of raccoon/chipmunk hybrid.
- Shakara: The Teknosaurs are spacefaring cyborg dinosaurs whose behavior is much like real dinosaurs: the carnivores are happy to eat their opponents, for instance.
- The Triceratons, from Teenage Mutant Ninja Turtles, are an alien race based on Triceratops.
Film — Live-Action
- Mostly averted with the Men in Black franchise, which has some truly alien-looking alien designs. Except of course, the main recurring antagonists — the Bugs, a race of scary space cockroaches.
- Star Wars has too many species to count. About 1/4th of all of the Star Wars alien races fall into this category: bats, lizards, moths, squid, goldfish, frogs, etc. etc etc. Cats and rabbits are some of the most common, particularly in the comics made in the 70s by Marvel. Creators tend to make up their own new species rather than going with the previously-established, say, small peaceful flightless birdlike aliens whose hat is academia.
- This becomes a rather hilarious point in an EU book that has Han ending up at an interplanetary pet competition. Humanoid aliens tend to have small furry pets, Lizard aliens seem to prefer more insect-like pets and of course the sentient insect species like (non sentient) humanoids as pets. Han noted that it was best to observe a pair for a minute if you weren't sure which one was the pet, case in point the Chadra-fan (giant rat) with a large bipedal lizard pet that was twice its size.
- Every alien race in Debora Chester's Alien Chronicles series.
- C. J. Cherryh's Alliance/Union universe has a few examples:
- In the Chanur Novels, the Hani species are essentially terrestrial lions given intelligence and stood on their hind legs. The way that the biological imperatives of a pride-grouping species would impact a sapient culture are shown, without rubbing it in the reader's face. It's "just" background.
- In The Faded Sun trilogy, the Regul seemed to bear a lot of resemblance to terrestrial hippopotamuses. And the dusei (singular "dus"), the companion animals of the Mri, were Ursine Aliens.
- The Pemalites, from Animorphs (and their Android creations, the Chee) are dog-like in both appearance and attitude.
- There's an attempt to justify this by claiming it's dogs that are actually Chee-like. Dogs were the result of (ahem) genetically mixing Pemalites with Earth wolves.
- China Miéville's Bas-Lag Cycle: The bird-like garuda from Perdido Street Station. Most of Miéville's "Xenians" seem to fit this trope to some extent. The hotchi (hedgehogs), the vodyanoi (frogs), the grindylow (eels), the Weavers (spiders) and the beetle men (guess) are just a few examples that spring immediately to mind.
- Marion Zimmer Bradley's Darkover stories: the cat-men (or cat-people).
- The tigers in the Doctor Who Eighth Doctor Adventures novel The Year of Intelligent Tigers. They're just intelligent tigers who have Bizarre Alien Biology, lay eggs, and have two opposable thumbs on each paw. Also, some of them can speak English to a degree and have their own complete language, which the Doctor learns. Other than the thumbs, they apparently look just like tigers. (It's intended as a parallel to the fact the Doctor is a Human Alien, though.)
- Robert Silverberg's Downward to the Earth: The Nildoror are basically sentient elephants who, for spiritual reasons, become sentient bear/tapir creatures every few years.
- The Fithp of Niven and Pournelle's Footfall bore a lot of resemblance, both physically and with their "herd" culture, to elephants. This is lampshaded when the Fithp observe actual elephants in Africa and wonder why they hadn't become the dominant species on Earth.
- The Lodgeless Ones in Marti Steussy's Forest of the Night resemble big cats (humans tend to call them "tigers") with feathers instead of fur. They're predatory, nomadic, and rather territorial. Kargans, in Dreams of Dawn, resemble some sort of crustacean (and undergo multiple metamorphoses, and have Mirror Chemistry). In their not-yet-fully-sapient larval stage, they scavenge like crabs; when adult, they're at least partly aquatic. The briefly-mentioned Houri seem to be some sort of simian. They're tree-dwellers by choice.
- From John Ringo's Into the Looking Glass:
- The first novel features the Mreee (pronounced the way a cat yowls when you stomp it's tail) who look like three-foot tall anthropomorphic house cats whose native language sounds like "cats stuck in a barrel." They subvert the "Proud Warrior Cat Folk" thing, as they are a Slave Race of the "Dreen" (or T! CH! R! as they call them- roughly translated, that means "the masters".)
- Later books in the series introduce the Cheerick, who are almost literally intelligent gerbils. One character describes them as looking like six-foot-tall, spear-wielding hamsters, to which another character replies, "They don't really look like hamsters. More like chinchillas."
- The Kzin, from Larry Niven's Known Space series are sometimes described as "a race of aliens resembling eight-foot cats". A more detailed description weakens the resemblance considerably, what with hairless tails, chubby body (with a lattice of struts instead of a ribcage), and other distinctions. Averted by most of the rest of the aliens. Some are very strange indeed, but with their evolutionary processes given a lot of thought. However, it was his first published story, and he claims to have written it in high school.
- The lizard-like Tagorians from the Noon Universe of the Strugatsky Brothers. Also subverted with the Headies/Golovans who look kinda like dogs (with very large heads), and indeed apparently descended from some sort of alien dogs (it's commonly assumed that they mutated thanks to the fallout of a nuclear war), but their psychology doesn't have much to do with any of the stereotypical dog-like characteristics; it's just thoroughly inhuman (to wit, they are mistrustful of technology, highly enigmatic, seemingly unemotional and above all practice evolutionary pragmatism on an apparently everyday basis; the latter in particular definitely overrides any dog-like loyalty they might have had).
- Andre Norton: the Salariki (Cat Folk), Zacathans (Lizard Folk), Trystians (Bird People), etc. etc. etc.
- All of the major alien races of Robert Asprin's Phule's Company series can be described thusly: cats, slugs, lizards, and warthogs (just not when Phule himself is around.) He even chews out Beeker, one of the few people he really has a personal relationship with, for using such terms.
- Piers Anthony's Prostho Plus had semi-humanoid dinosaurs, anteaters, oysters, etc. Semi-subverted with the Gleep, who looked exactly like Earth whales, and the Lepidop, human-sized moths and butterflies whose only other physical difference from Earth species was having teeth.
- The Rats in Rats and Gargoyles.
- James White used this in some of his Sector General stories.
- Hospital Station, "The Trouble with Emily": The titular character is essentially a brontosaurus (she's called Emily Just for Pun by the engineers who maintain her living area, especially the crew of the tractor beams that keep her from thrashing around if she becomes agitated).
- Hospital Station, "Outpatient" features the staff's first encounter with the Ians, who reappear in Star Surgeon, in the form of a youngster rescued from a wrecked alien hospital ship. The Ians as a species resemble giant dragonflies as adults; the patient is in chrysalis form, which seriously confuses the staff until Conway works out why the detected vital signs are so messed up (they're getting two sets, one from the "caterpillar" form that's being sloughed off, one from the adult stage). The patient's actual original medical condition is that it can't break out of its chrysalis on its own and thus needs some minor but time-critical surgery.
- Ambulance Ship, "Quarantine": A youngster belonging to an unknown species is rescued from a wrecked spaceship. The medical staff find out the hard way that the new species' physiology is essentially like that of skunks, though with a mild poisonous effect rather than a bad smell.
- Toby Frost's Space Captain Smith books include the Ghasts, a fascist species of mansize army ants; Beetle People, whose culture revolves around collecting and rolling dung; and most of all the Yull, 6-foot lemmings who regard suicide as the highest virtue, and hence follow a samurai honour code taken to a ludicrous extreme. Admittedly, they are comedies.
- Kathleen Sky's Star Trek novel Death's Angel features a whole conference of these aliens: a giant blue crocodile, a koala, a cat, a bat, a lamprey, etc. With the occasional exception including a vampire and a talking pyramid. The character names aren't much more creative; the cat is Neko (Japanese for cat) and the pyramid is Hotep.
- While most aliens in the Uplift universe are of the starfish variety, there are some that resemble Earth animals. Pila are Ursine Aliens. Soro are a bit like therapod dinosaurs. Synthians look like large raccoons without tails. Tytlal are pretty much otters capable of speech. And the Tytlal's patrons, the Tymbrimi, are described as having a slightly vulpine appearance, and the personality of a mythological Kitsune, though they're also the most anthropomorphic aliens in the setting, approaching Rubber-Forehead Alien levels with application of their minor shapeshifting abilities.
- Mercedes Lackey's stories in the world of Velgarth have the hertasi (Lizard Folk) and tervardi (songbirds); there are also the dyheli (elk) and kyree (wolves), but they aren't bipeds.
- A. E. van Vogt's The Voyage of the Space Beagle had a cat-like alien called Coeurl (which has since appeared in other media) and telepathic alien birds called Riim.
- The Lindauzi in Warren Rochelle's The Wild Boy. There is a scene where people disagree about whether they look like cats, dogs or bears, but the cover shows them to look a lot like Earth bears. The one difference is that they have crests running from front to back on their heads and cat-like retractable claws. And if they lose their sentience, they'll go back to hunting and killing prey like grizzly or polar bears.
- There's plenty of examples in Doctor Who: the Judoon are rhinos (who are sentient, but not necessarily intelligent), the Tritovores are flies, etc. Occasionally, there's some alien traits for the aliens: Vespiforms are wasps and shapeshifters, the Cheetah People are cheetahs and natural teleporters, the Foamasi are chameleons and are immune from radiation and can compress themselves into human suits.
- Lexx had the Insect Civilisation.
- The Cat in Red Dwarf is a humanoid who evolved from a cat that lived 3 million years before.
- While Star Trek tends to avoid this trope for the most part, the Xindi from Star Trek: Enterprise are consisting of six different species resembling different kinds of animals: There are The Reptilians, the Insectoids, the extinct Avians, the Arboreals (resembling sloths), the Aquatics (resembling whales or large fish) and the Primates (resembling humans, and thus are simply Rubber Fore Head Aliens).
- Dungeons & Dragons has a long history of this, although the precise portrayal can zig-zag between this and Petting Zoo People with the odd Furry Reminder.
- Though considered reptiles in later editions, kobolds in the Basic/Expert/etc version of Dungeons & Dragons were often portrayed as Intelligent Gerbil versions of evil dog-people, with yapping voices and wagging tails, although their appearance gradually became much more lizardlike.
- Similiarly, the lizardfolk are written as emotionless swamp-dwellers driven only by survival.
- Nycters and desmodu are both races of gregarious subterranean bat people who live in densely-populated communities.
- Mystara setting, including Savage Coast, is full of them. Aside of more or less standard races there are: Aranea (scheming and crafty sorcerous were-spider people), Lupins (canine humanoids, with teamworking/Lawful inclinations), Rakasta (proud, warlike Cat Folk), Tortles (bipedal turtles), Gurrash (big brutal crocodile-humanoids), wallaras (stealthy chameleon-men), and Caymars (small agile lizard kin).
- Races of the Wild claims that Gnoll society is very much based on the social structure of hyena packs. It doesn't always agree with the way they're treated in other material, but is the only source to explicitly go into detail about them. 4th Edition plays this up even further in terms of the gnolls' combat mechanics.
- The Spelljammer setting had nothing but these for races, except for Scro, who fill the Monster Adventurers slot. Some fit this trope more accurately than others; the xixchil, biological Mad Scientist mantis-people, are notorious for their incredibly individualistic social mentality, and whilst they try to avoid it, sexual cannibalism is still a very real risk in their mating rituals — and the race keeps a sustainable population because, upon hatching, the strongest hatchling will devour the rest of its clutch, save maybe for one or, very rarely, two siblings of equivalent strength.
- Traveller Tabletop RPG: the Aslan and the Vargr. Cats and dogs (well wolves actually).
- The Vargr were genetically engineered by the Ancients from Earth dogs a long time ago.
- Aslan really behave more like the more warlike tribes among humans than like lions. They have a sense of tribal cohesion, hierarchy, a stern honor code, and so on. Canon actually says right out that they have a lot in common with humans.
- Star Fleet Battles: Lyrans (lynx). The Kzinti were already official in-universe, giving two "cat-people" races (who hate each other).
- Starfire board game: Khanate of Orion (another touchy cat-race).
- GURPS Space allows alien designs from intelligent gerbils (literally if you wish) to "plasma life".
- The Bio-Tech book has intelligent gerbils called Tek-Rats.
- The Jokaero in Warhammer 40,000 are orangutan-like aliens with an innate knack for building incredibly advanced technology with scraps of damaged machinery, but possess no real language. The Imperium Inquisition makes use of Jokaero to customize their weaponry and other equipment.
- Warhammer Fantasy meanwhile has the Skaven, anthropomorphic rats who live underground, constantly squabble, are disease-ridden, and don't attack anything bigger than them without having a 10-1 numerical advantage. They also reproduce like crazy and the albinos or big ones get special treatment. One of their war-machines is a giant exercise wheel with guns.
- The Aeriad, Ferrans, Gryphs, Imrians, Jaka, Saurans, and Stryx of the Talislanta game-setting are Intelligent Gerbil songbirds, rats, hawks, fish, panthers, lizards, and vultures, respectively.
- Weres in Shadowrun are Awakened animals that can transform into humans, and they often bring their animal behaviors and attitudes with them into human society. This can be hard on the humans, when it's Striper who's bringing her predatory attitude with her...
- Lots of these in Magic: The Gathering, catfolk, lizards, elephants and insects being just a few examples. Part of the reason for them may be game balance, to keep the game's few humanoid races from dominating the creature type distribution.
- The Roden from Burning Wheel are pretty much intelligent human-sized anthropomorphic rodents who divide themselves into Country Mice (Kind of Vegetarian Amish types who look like field-mice) and City Mice (stereotypical criminal rat-person, with 'Pinky' and 'The Brain' included as possible life paths, Narf) with murderous cultists and albino mystics thrown in for good measure.
- The World Tree RPG is rife with them: Cani (dog-folk, focused on personal relations), Herethroy (insect-folk, mostly farmers), Gormoror (bear-folk, honorable warriors), Khtsoyis (squid-folk, not too bright... but brighter than they let on), Sleeth (intelligent cats), Rassimel (raccoon-folk with obsessive-compulsive tendencies), Orren (otter-folk with short attention spans), and Zi Ri (dragon-folk who live a looooong time... barring accidents).
- In Myriad Song Towsers look like dogs with crystals in their fur, Troodons resemble the dinosaurs they're named after, Rhax males are basically giant spiders (and not actually intelligent), Ishato look a lot like octopi, while Elvers seem to be some cross between assorted eels and seals.
- Notably averted, subverted, and played with in Mass Effect. Turians are like a bizarre cross between a velociraptor, various insects, and birds, but are not any more violent than humans, and can be very nice people. Krogan are probably the closest thing to playing this trope straight, as they are something of a cross between a T. rex and a snapping turtle, and are a definitely Proud Warrior Race. Salarians, a race of Smart Guys are vaguely amphibian, but have numerous characteristics that lead some Protheans to mistake them for lizards, since Javik mentions they used to eat flies and lick their eyeballs in his Cycle.
- The Luminoth in Metroid Prime 2 are a race of giant anthropomorphic moth-people that seem to have an obsession with light.
- The Kilrathi from Wing Commander, a race of evil tiger-people.
- Some of the alien species in the Star Control series fit this trope:
- The first game has the Ilwrath (spiders), the Mycon (mushrooms), the Shofixti (marsupials), the Spathi (shellfish), the Ur-Quan (centipedes), and the Yehat (pterodactyls)
- The second game adds the Dnyarri (toads), the Druuge (pigs), the Melnorme (literal Starfish Aliens), the Orz (fish, or so they want you to think), the Pkunk (toucans), the Supox (plants), the Thraddash (rhinos), and the Burvixese (turtles, mentioned only).
- The non-existent third game introduces the Doog (dogs, obviously), the Lk (more mushrooms), the Owa (jellyfish), the Ploxis (rats), and the Vyro-Ingo (crustaceans).
- Sword of the Stars. The Hivers, Liir, Tarka, Zuul and Morrigi are Intelligent Gerbil ants, dolphins, crocodile/ape hybrids, tasmanian devils, and dragon/crow/magpies, respectively.
- The Iskai in Albion look like anthropomorphic cats that besides their appearance, resemble humans a lot, at first glance. On second glance, you realize that not only are they completely alien, but have some very bizarre, logic defying traits. This is even lampshaded at one point.
- Semi-intelligent animals pop up in various forms in World of Warcraft, such as the raptors, who have been known to ornament their bodies with feathers, seem to have a vague hierarchical society and are dexterous enough to unlock and open doors with their little foreclaws.
- The Chua of WildStar are this both figuratively and literally, being a highly-intelligent gerbil-like race.
- A good number of the alien races in the lore of Battleborn are basically sapient versions of Earth animals. To name a few, there are the Aviants, Bird People whose subspecies range from straight up Petting Zoo People to Accessory Wearing Funny Animals; Pendles' race, the Roa which are basically anthropomorphic Snake People with snake tail-like Combat Tentacles that naturally molt off upon adulthood; and the Monstrous Seal-like alien race which the main antagonist of the DLC Toby's Friendship Raid belongs to.
- Last Res0rt runs on this trope and plays it seriously enough to pull it off; virtually every nonhuman in the series is a furry alien of some kind. It helps that the aliens involved map to multiple critters (Talmi, for instance, seem to be a cat / kangaroo mix) as opposed to just pulling straight. And in addition to the Talmi:
- Anyr are often dubbed horses, but have large donkey-like ears, unicorn tails, and parrot feet.
- Vidians look roughly like Kirin, except when they look more like Eastern Dragons.
- And among the unnamed species, we have four-armed rabbits, tentacle-haired felines ("Sea Lions", perhaps?), and we never have been given a proper name for Addy's species (or for her Efreet in the Bottle) — she looks like a simple (albeit very pink) lion centaur, but she has leopard spots going down her back as well.
- Uma and her father in Everyday Heroes. Holy cow!
- The Nemesites of The Inexplicable Adventures of Bob! are giant butterfly people. Their culture does not appear to be butterfly-like, however.
- The galaxy in tinyraygun is populated by these. The Leviks, for example, are long-eared cats with short tails, with the ones from the mountain regions even sporting antlers.
- The Chakona Space setting has the alien species Caitians (it was originally a Star Trek Fan Fic), Voxxans, and Rakshani (Proud Warrior Race Guy, also possibly Terran semantic imperialism because Rakshasa were oriental cat-demons and D&D monsters before they were aliens), but also more alien aliens.
- Tasakeru: The eight sentient mammal species in this series are basically a mixture of this and Petting Zoo People.
- The D'yimyi of the planet Diyim'yi, found in http://home.earthlink.net/~otrstf/ - an online-published novel. Physically, they resemble foxes, but they're from another planet, and a great example of this trope in action.
- Ben 10
- The Loboans which are space wolves.
- Stinkfly (giant insect)
- Ripjaws (fish man).
- The sequel series Alien Force has even more, such as Big Chill (moth man), Jetray (manta ray that can 'swim' in the air) and Humungasaur (dinosaur). Though the one with truly animal-like behavior is Spidermonkey, who acts hyper and chimp-like.
- And later still in Omniverse we have Crashhopper (grasshopper), Bullfrag (frog), Astrodactyl (pterosaur), Ball Weevil (insect), Kickin' Hawk (bird of prey), Molestache (Mole...apparently) and Walkatrout (fish).
- Biker Mice from Mars. Exactly what it sounds like.
- Bounty Hamster
- Darkwing Duck has an episode with intelligent alien cows.
- Occasionally featured in Futurama with the most prominent being the Hyperchicken. But due to the Sci-Fi Kitchen Sink nature of the show, it's hard to tell whether most of them are actual aliens or just genetically enhanced animals.
- Hämsterviel from Lilo & Stitch: The Series. He's notably physically different from any Earth animal, but the comparisons are thrown around left and right. What's more, everyone and his brother (even other aliens) refers to him as "gerbil-like", while Hämsterviel himself takes offense to this (but only because he insists that he's hamster-like.) He hates when people pronounce it "Hamster-wheel", though.
- The Bestials in Spider-Man Unlimited.
- The Kzinti appeared once in Star Trek: The Animated Series, and there was also the Caitians, a race of Cat Folk.