The Canary Sisters are a trio of singing birds in Professor Owl's music class in the 1953 animated shorts Melody and Toot, Whistle, Plunk and Boom. They are noted for their Andrews Sisters-esque close harmony singing.
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.)
