Select the indicated animal's profile. Then, select the pencil icon, and rename the animal to the listed case-sensitive name. After an animal is renamed, you can change its name to whatever desired, and it will still retain its new appearance.

Chocolate Bunny

Select the female rabbit's profile, and enter "Eostre" as a new name.

Red Badger

Select the male badger's profile, and enter "Madger" as a new name.

Yellow Squirrel

Select the squirrel's profile, and enter "Peekaboo" as a new name.