Camouflage is pretty common in the animal kingdom, but animals that can change their colors are much less common. This list is full of animals that have the spectacular evolutionary gift of being able to change their colors. Some of them can change to blend into a new background in less than a second.The reasons animals change their colors do vary, as do the methods they use to change colors, and scientists still do not completely understand the ways in which some animals change. But the mystery just makes them all the more awesome to look at.
pigment cells in its skin, it changes the shape of its body to mimic other animals. see more on Octopus
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