Before you complain, we never promised that every entry on this list would involve humans! If you want to find a lookalike for an animal, the first place you should look is another animal. This is the picture that proves our point.
Our favorite thing about this is that it's a cross-species lookalike. Sid is a ground sloth. This very good boy is a dog. He's had a little bit of help to pull it off, too - but it still works very well!