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 ...

Sticking your tongue out is not a polite thing to do if you’re a human, but for chameleons and some other reptiles it is the way they survive. Chameleons are lizards that range in size from just over ...

A Furcifer pardalis (panther chameleon) sleeps in a tree in Madagascar. Curious Kids is a series for children in which we ask experts to answer questions from kids. Can chameleons change color when ...