History Main / WorldOfMammals

* In ''Manga/OnePiece'', the Minkmen are all {{Beast M|an}}en who are based on only mammals. All of them, including the ones based on herbivore mammals, can and do eat meat (usually that of reptilians or fishes).

* ''Manga/DragonBall'' (especially in the early chapters) features {{Beast M|an}}en that are mostly mammals with the occasional reptile (such a crocodile or dinosaur) with some playing major roles such as Oolong. Birds, amphibians, fish, and invertebrates are no to been seen (on Earth that is).

* ''Manga/DragonBall'' (especially in the early chapters) features {{Beast M|an}}en that are mostly mammals with the occasional reptile with some playing major roles such as Oolong. Birds, amphibians, fish, and invertebrates are no to been seen (on Earth that is).

* ''WesternAnimation/{{Zootopia}}'' is a city populated by evolved mammals set in a world where humans never existed. Therefore, animal species domesticated by humans (such as domestic dogs) rarely appear, although there are a handful of exceptions (for example: domestic sheep, horses, and pigs exist). WordOfGod mentioned that primates were not shown in the movie because they appeared too human-like (but didn't deny their existence, and concept art for the movie features a bushbaby), and has hinted, but not confirmed, that a city inhabited by reptiles and birds may exist. The only non-mammals seen at all are the non-anthropmorphic houseflies flying around Yax's head, a fish restaurant, and the implications of another restaurant called Bug Burger.

* ''Anime/Dragon Ball'' (especially in the early chapters) features {{Beast M|an}}en that are mostly mammals with the occasional reptile with some playing major roles such as Oolong. Birds, amphibians, fish, and invertebrates are no to been seen (on Earth that is).

* ''Manga/Dragon Ball'' (especially in the early chapters) features {{Beast M|an}}en that are mostly mammals with the occasional reptile with some playing major roles such as Oolong. Birds, amphibians, fish, and invertebrates are no to been seen (on Earth that is).

''Manga/Dragon Ball'' (especially in the early chapters) feature {{Beast M|an}}en that are mostly mammals with the occasional reptile with some playing major roles such as Oolong. Birds, amphibians, fish and invertebrates are no to been seen (on Earth that is)

& ''Manga/Dragon Ball'' (especially in the early chapters) feature {{Beast M|an}}en that are mostly mammals with the occasional reptile with some playing major roles such as Oolong. Birds, amphibians, fish and invertebrates are no to been seen (on Earth that is)

* All the characters in ''WebAnimation/HappyTreeFriends'' are mammals, mostly woodland creatures. The show only has ever had one non-mammalian character with Sneaky, who only ever appears in the ''W.A.R. Journal'' episode of the ''Ka-Pow'' spin-off.

* Most of the major beastmen in ''Anime/BNABrandNewAnimal'' are mammals (Michiru is a tanuki, Shirou is a wolf, Marie is a mink, etc.), with a few birds as supporting characters.

* A majority of the ''VideoGame/SonicTheHedgehog'' cast are mammals, even though Team Chaotix, which consists of two reptiles and one insect, and the Babylon Rogues, a team of birds, are thrown in.

* ''WesternAnimation/{{Zootopia}}'' is a city populated by evolved mammals set in a world where humans never existed. Therefore, animal species domesticated by humans (such as domestic dogs) rarely appear, although there are a handful of exceptions (for example: domestic sheep, horses, and pigs exist). WordOfGod mentioned that primates were not shown in the movie because they appeared too human-like (but didn't deny their existence, and concept art for the movie features a bushbaby), and has hinted, but not confirmed, that a city inhabited by reptiles and birds may exist. The only non-mammals seen at all are the non-anthropmorphic houseflies flying around Yax’s head, and the implications of a restaurant called Bug Burger.

* Downplayed in ''WesternAnimation/{{Arthur}}''. Almost all the characters are mammals, but non-mammals very occasionally show up. Most often, FunnyAnimal reptiles and birds appear in the background or as gags.

* {{Inverted}} with ''Franchise/{{Splatoon}}'', where everyone is a marine invertebrate, some of whom can transform into human-like forms. The only mammal is Judd (and his clone), a cat who's the LastOfHisKind.

This trope can occur for many reasons. The designers might find humanoid reptiles or birds too [[UncannyValley weird looking]] or [[FurriesAreEasierToDraw hard to draw]]. Or possibly, they also being mammals, just prefer mammalian animals or are more familiar with how mammals work. Another reason for this might be a way to avert CarnivoreConfusion. Instead of having {{Vegetarian Carnivore}}s or having characters eat meat without explanation as to where it's from, instead it's implied (or outright shown) that they eat non-anthropomorphic birds or reptiles.

* ''WesternAnimation/{{Zootopia}}'' is a city populated by evolved mammals set in a world where humans never existed. Therefore, animal species domesticated by humans (such as domestic dogs) rarely appear, although there are a handful of exceptions. (For example: domestic sheep, horses, and pigs exist) WordOfGod mentioned that primates were not shown in the movie because they appeared too human-like (but didn't deny their existence, and concept art for the movie features a bushbaby), and has hinted, but not confirmed, that a city inhabited by reptiles and birds may exist. The only nonmammals seen at all are the (nonanthroopmorphic) houseflies flying around Yax’s head, and the implications of a restaurant called Bug Burger.

In RealLife, there are many species that theorists have speculated can evolve over time into something of comparable sentience and intelligence to humans. Not all of them are mammals.

* Coco Pops mascot lives in a world where there are animals in a jungle or a city with only mammals in it with birds and reptiles.

* In ''Animation/CatCity'', only cats, mice, rats and vampire bats are portrayed as anthropomorphic, whereas caimans, snakes and parrots are {{Nearly Normal Animal}}s (although [[PollyWantsAMicrophone the parrot can talk]]). The sequel throws an anthropomorphic badger into the mix [[spoiler: (except it doesn't, the badger in question is a mouse in disguise)]], but also shows a non-anthropomorphic leopard, sloth and buffaloes.

* The two races in ''VideoGame/{{TailConcerto}}'' and ''VideoGame/{{Solatorobo}}'' are anthropomorphic dogs and cats.

* {{Inverted}} with ''Franchise/{{Splatoon}}'', where everyone is a marine invertebrate whom some can transform into human-like forms. The only mammal, besides his clone, is Judd, a cat whose the LastOfHisKind.

* {{Inverted}} with ''VideoGame/{{Splatoon}}'', where everyone is a marine invertebrate whom some can transform into human-like forms. The only mammal, besides his clone, is Judd, a cat whose LastOfHisKind.