Chameleons are perhaps the most well-known animals that have the ability to change color, but scientists didn't know exactly how it was done until now. Unlike other creatures that disperse ...

The chameleon's uncanny ability to change color has long mystified people, but now the lizard's secret is out: Chameleons can rapidly change color by adjusting a layer of special cells nestled ...

Skin that changes color according to one’s emotional status may be the stuff of human nightmares; for chameleons, though, it’s essential to survival. The lizards’ hue-changing skin, for one ...

But HOW chameleons change color has been a bit of a mystery until now. A team of researchers at the University of Geneva in Switzerland used several high tech methods to figure it out.

And the more dramatic color transformations—which have made species like the panther chameleon famous—help these lizards defend territory and attract mates.

Chameleons are the most famous color-changing animals, but there are plenty of other animals that possess this talent.

Chameleons do change color when they sleep, but scientists think it happens in a different way to when they’re awake.