>>54079869it's because we as people tend to naturally anthropomorphize animals in our heads anyway, but then it you actually do a double take and look at it through the lenses of respecting vague animal anatomy and you see it immediately
Same reason why Pikachu is drawn with a forehead and has toddler body shape now. Ken still draws it like a rodent, but artists who aren't used to drawing/modeling animals have this accidental bias and it shows up.