What's cuter than a bunch of little trick'r treaters dressed as mini little superheroes knocking on your door on Halloween night? How about a bunch of fuzzy kittens dressed as Superman? A puppy dressed as Batman? A Captain America chinchilla? Yeah, we thought so.We've gathered the cutest, cuddliest, fuzziest, snuggliest little heroes from across the Interwebs. These are the best Halloween pet superheroes! Make sure to vote up your favorites.