Ace the Bat-Hound is a fictional superhero dog appearing in American comic books published by DC Comics. He is commonly featured as the canine crime-fighting partner of Batman and currently the sidekick of Streaky and Krypto.
Obviously, don't nominate any human characters. Hybrids like Cheetah or The Lizard are okay, as are shapeshifters with one set animal form (eg Professor McGonagall.)
