During the episode "The Good Deed", Wander and Sylvia in the beginning helped a "bunny" get something to eat. They grabbed a carrot from a branch and then gave it to him, unaware that they took it from Fleeblebort's branch.
The bunny's general color scheme when he's in a good state is pinkish with a blue tongue. When hungry, he's ore or less the same, but with the colors slightly darker.
- "The Good Deed"