We all know what chameleons are capable of: changing into a variety of colors to match their surroundings. They're one of the animals that are so well camouflaged you'd never see them right in front ...

Octopuses change color to camouflage themselves from predators such as stingrays and eels. Octopuses have even been observed changing color in their sleep. Octopus's color-changing ability is known as ...