With color, chameleons can communicate with others, expressing attitudes such as their willingness to mate. Contrary to popular belief, chameleons cannot display limitless colors and do not change ...

For instance, a chameleon might turn a darker shade to show submission or a brighter colour to attract a mate. Their colour can also reflect their mood, such as showing stress or aggression.

In the cages where Henn keeps female chameleons, one named Katy Perry—salmon pink because she’s ready to mate—is next door to one named Peanut, pink with dark bars because she has already ...