People that pretend they are animals (usually not real ones but anthropomorphized fictional versions). In different people the pretense can go to different dept

People that pretend they are animals (usually not real ones but anthropomorphized fictional versions). In different people the pretense can go to different depths, from occasional light cosplay to complete lifestyle change. Sometimes there's a sexual fetish component to it. Since the phrase "identify as" or "identify with" is in fashion now, that's how they are described.