Fiji banded iguanas have chamelon-like skin
Depending on their mood, Fiji banded iguanas are capable of changing their skin color from green to various shades of blue, gray and black — and that's not all.
"Banded iguana skin is so photosensitive that any part of the skin in shade is a completely different color of green than the skin in sunlight," according to the San Diego Zoo.
Despite their beauty, Fiji banded iguanas are exceedingly rare. Because of habitat loss and predation by introduced species like mongoose and domestic cats, their numbers have been in steady decline for the past century. Today, this "national treasure" of Fiji is listed as endangered.