How fast can chameleons change color?

Do Chameleons really change color? Yes they do! Watch this chameleon change from green to bright yellow in less than a minute. read more

In fact, chameleons mostly change color to regulate their temperatures or to signal their intentions to other chameleons. Chameleons are famous for their quick color-changing abilities. It's a common misperception that they do this to camouflage themselves against a background. read more

The iridophore cells contain nanocrystalsof different sizes, shapes and organizations, which are key to the chameleons' dramatic color shifts, the researchers said. The chameleons can change the structural arrangement of the upper cell layer by relaxing or exciting the skin, which leads to a change in color, they found. read more