Rudy is a gigantic albino Baryonyx that lived in the underground world during the Ice Age and the bane of the weasel Buck's existence. He is the hidden main antagonist of Ice Age: Dawn of the Dinosaurs.
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.)
