Age: 86
male
Monstro is an enormous whale, and the fourth and final antagonist of Disney's 1940 animated feature film, Pinocchio.
Monstro
Whale
for Whale in Fictional animals by species
Suggested by caitlinfrost
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.)
