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 ...

Chameleons can change to yellow, orange, and black quickly - but struggle with green or blue, experts say. Research found the flap-necked chameleon can match certain colors with greater accuracy and ...

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 ...