It's the teeth and muzzle. All of them are the same, so they look the same.
I would shorten the muzzle on the cat, stretch the face a little wider, and make the nose smaller (cat noses are really small compared to their faces). Basically, the face is too square, and it shoud be closer to a triangle. Much the same with the Racoon, though it would be easier to tell it was a racoon without the hoodie. *shrug* If anything, the muzzle and nose on the racoon should be even smaller (proportionally) than the cat's.
That said, you still draw better than I ever could.
