What a great question, Ikechukwu! It doesn’t have a simple answer, though: yes, chameleons do change color when they sleep, but we think it happens in a different way to when they’re awake. People ...

You’ve probably heard that chameleons change color to blend into their background in order to hide. But that might not actually be true. So what do they actually use this color-changing ability for?

Chameleons, famous for shifting colors to blend into their natural surroundings to avoid predators, may also be using their chromatic superpowers for a totally different reason: To win fights. This ...

New research shows that chameleons also change to attract mates. Jan. 29, 2008 — -- Chameleons are famed for changing color to blend in with their surroundings and hide from predators -- but new ...

Controlling color Chameleons change color by contracting and relaxing certain cells in their skin that contain either crystals or pigments. The crystals are colorless or slightly yellow, but by lining ...