Marill (Japanese: マリル Maril) is a dual-type Water/Fairy Pokémon introduced in Generation II. Prior to Generation VI, it was a pure Water-type Pokémon.
It evolves from Azurill when leveled up with high friendship and evolves into Azumarill starting at level 18.
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.)