Dylan Porcupine is a character that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. He is a mobian porcupine, a former member of the Substitute Freedom Fighters and was personally trained by Sally Acorn.
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.)