Reasons for This TropeOne reason for this trope is that Men Are Generic, Women Are Special, with males being perceived as the default and the females being "othered." In a few species in the animal kingdom, like many birds, some mammals, and anglerfish, the sex dictates a huge visual disparity, yet it is nearly inevitable that it is the female anthropomorphic character who loses the animalistic traits. When anthropomorphic male animals are illustrated, they're allowed to retain the look of the respective species they happen to be, but when female anthropomorphic characters, the artists are pushing the immediate visual recognition of femininity which results in "prettifying." In some instances, sexualization of the original animal character. Another reason is that, as we are a species largely used to seeing our fellows clothed, it is only logical that we would come to see masculinity as an absence of feminine traits. After all, while the physical attributes that most obviously designate one as male are completely rendered veiled by socially normal attire, a woman under normal circumstances would have to put particular effort into disguising the presence of her breasts, the shape of which are generally obvious even when they are concealed. Consider also how many distinct styles of clothing are considered "male", how many are "female", and how many can easily be worn by either side; we may be pinning much of our ability to distinguish between sexes strictly on the presence or absence of a feminine figure.
How Media Tends to Proportion Anthropomorphic Female Animal Characters, and Its EffectsThe tendency for media to sexualize women more than men does not apply only to human and Demi Human characters. This tendency also extends to alien, monster, and animal characters (fictional or nonfictional species). With all three, the females are usually made more anthropomorphic than the males as well. The media tends to depict bipedal or anthropomorphic female animal characters with mostly or completely humanoid body proportions and human-like breasts rather than as a run-of-the-mill Funny Animal or Civilized Animal. They tend to be sexualized as well. An early example of anthropomorphic female animal characters who are on the more "human" end of the sliding scale of anthropomorphism with humanoid body shapes is Van Beuren Studio's feline character in "The Farmerette," done in 1932. There were a few other early examples, but female animals of this level of anthropomorphism have become more common since the 1980s. Due to this, it is now natural for a naked or even partly dressed female animal character to seem awkward to the viewer unless she is a Nearly Normal Animal, Talking Animal or Partially Civilized Animal. This tendency is even greater with fanart of female animal characters in media. This trope arises from artists who tend to associate "feminine" tells with human female Secondary Sexual Characteristics when drawing female animals. By contrast, the designs of male and prepubescent female animal characters are usually composed of basic shapes that remain faithful to their species rather than having a humanoid body shape because male characters are not held to the same standard. Intimidating, macho, muscular, or evil anthropomorphic male animals may be drawn with a broad chest, a square jaw, or a top-heavy build to show those traits, but you would think less that it was male and more that that was just how the character looked like. Prepubescent female animal characters are not held to the same standard because prepubescent girls aren't really either. The more animalistic look of male anthropomorphic animal characters and more humanoid look of female ones may reflect society's expectation of females to be more "refined" and the males to be more "savage"/"beastly", in attempts to cultivate greater identification with the characters based upon gender roles. Even though there are a lot of anthropomorphic female animals that are full-on Petting Zoo People, there are still some female Funny Animals and Civilized Animals. For example, Mrs. Brisby and Penelope Pussycat may be anthropomorphic female animals, but they donít have a busting chest, long human-like legs, or a human-shaped butt.
Anthropomorphic Female Animal Characters With a Funny Animal/Civilized Animal Body Shape