What creature constantly changes to hide itself?
there is a bird called the ptarmigan which continuously changes
its plumage to hide and camouflage itself. The ptarmigan is found
usually in the places occurring in the Arctic Circle. To hide it
from its main predator, the Arctic fox, it changes its plumage
throughout the seasons. Its plumage will almost blend into a rock
in the summer, when the ice would have melt, but in the winter, its
plumage changes to a pure white. That's your answer.