Fan Casting Amazing Technicolor Wildlife in Sort by Tropes

Animals are a bit different from humans — a lot of them do come in wilder, more flamboyant colors, especially in tropical areas. Animals use bright colors as a way of saying "Don't eat me! I'm poisonous!" or even for reasons we're not quite sure of. However, not all animals come in different colors — a lot of mammals tend to be the same grayish and yellowish and brownish and reddish colors we humans are, with the brightest colors reserved for birds, insects, and fish. (A few reptiles here and there, too.) And while no one would bat their eye at a blue peacock with green tail feathers, a red peacock with bright purple tailfeathers would be distinctly more unusual.