The giant squid is the main antagonist in the 2016 Disney/Pixar animated film, Finding Dory. She is an enormous squid that Dory, Marlin, and Nemo encounter on their way to find Charlie and Jenny.
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.)
