Raccoon
Let's hear it for the animal kingdom's lean, clean washing machine! The Native Americans first called them "raccoons"--that's the Algonquin Indian way to say "he who scrubs with his hands." And the second part of the species' Latin name--lotor--means "washer."
OK, so raccoons do rub their food--and dip it in water if they've been fishing in a stream. But it's more about being touchy-feely than wishy-washy. Some animals tell by sight or smell if they want to eat something, but raccoons use their sensitive forepaws to examine their food. This way, they can tell if they need to pry open a clam, for example, or remove the shell from a nut. How's that for a hands-on approach?!