Yellow type (swimming)
Penguin: Slides around on stomach
Seal: Rolls around
Otter: Does the backstroke

Green type (running)
Hedgehog (warthog): Sprints
Cheetah: Cleans itself like a cat does
Rabbit: Hops around

Gold type (imaginary)
Phoenix: Wags tail
Unicorn: Bucks its feet around like a horse
Dragon: Breaths fire occasionally

Blue type (random)
Skunk: Farts
Ram: Somersaults forwardly
Racoon: Spins

Purple type (flying)
Parrot: Sings
Condor: Flaps around aimlessly
Peacock: Struts around cockily

Red type (power)
Gorilla: Beats chest
Tiger: Sharpens nails
Wombat: Growls

Black type (ghost)
Bat: Makes chao's legs disappear
Bone Dog: Takes away previously given animal traits, and allows chao to wear masks.
Half Fish: Makes the chao thing a flame, hence the name ghost type.