Kemonomimi

Moe anthropomorphism (萌え擬人化, moe gijinka^?) is a form of anthropomorphism where moe qualities are given to non-human beings, objects, concepts, or phenomena. In addition to moe features, moe anthropomorphisms are also characterized by their accessories, which serve to emphasize their original forms before anthropomorphosis. The characters here, usually in a kind of cosplay, are drawn to represent an inanimate object or popular consumer product. Part of the humor of this personification comes from the personality ascribed to the character (often satirical) and the sheer arbitrariness of characterizing a variety of machines, objects, and even physical places as cute.

This form of anthropomorphism is very common in otaku subcultures. With the exception of kemonomimi (which are human-like characters that have animal features), many moe anthropomorphizations started as dōjin efforts. At first many were the results of discussions on Japanese internet forums such as 2channel or Futaba Channel. The trend spread out of dōjin circles as commercial anime and manga also prominently feature characters who are personifications of inanimate objects.

, literally meaning "animal ears", is the concept of drawing animals as bishōjo or bishōnen, or having such characters wear animal accessories such as ears or tails. Catgirls and catboys are the most prolific in this category, although bunnygirls, foxgirls, and dog girls are also common. Kemonomimi characters typically appear human except for added animal-like qualities. The concept has some connection to furry fandom.

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Wikipedia