I know! Art from other cultures can be so confusing!
I grew up in the pacific northwest, surrounded by a lot of examples of Inuit art. The captions always said something like, "This one is an orca," and I always thought, "If you say so!"
But I think Mickey is even more distorted! I can easily imagine someone from another culture reacting that way to the claim that he was a mouse.
I don't have a problem recognizing real mice because I've interacted with them a lot. But animals for which my only frame of reference is cartoons, well . . . my expectations of the real animals can be downright embarrassing.
I'd imagine my mental models of them would fare better if I weren't surrounded by miles and miles of endless civilization.