Birds, fish, reptiles, amphibians, insects? Sure. But no mammals.
So I had to google it. Apparently, there is a sloth that moves around so slowly moss grows all over it and it doesn’t care. So it may appear green, but only in the sense that it wears it.
You might need to read the post where I admitted I misread it as “animal,” due to being half asleep. Thank you, helpy helper.