Agreed, we can find Toucans as part of the audience in the sport themed levels so there is an existing model for some additional birds, i would love to have a cute horned owl cosmetic for Moonmoon as well as a panda texture skin for Bob the Bear.
Even Turtles and other reptilians in the crowd as well, even a nice looking Godzilla looking monster cheering in the crowds as well time to time so there are more critters likely going to be playable in the future, but when i'm not sure...