Chameleons have laterally compressed bodies. This enables them to warm up quickly by presenting a larger surface area to the sun. It also helps some chameleon species blend in among the similarly shaped leaves in their environment.
The process of shedding is called ecdysis.
Chameleons change color by rearranging a lattice of nanocrystals in one of their top layers of skin cells called iridophores. Chameleons can then stretch this layer, broadening the nanocrystalline lattice, thereby causing it to reflect a different wavelength of light.
Some chameleons play dead to avoid predation; this is called thanatosis.
Chameleon fossils have been found in central Europe and China, indicating they were once much more widespread than they are now.
The oldest known chameleon fossil is from the extinct species Chamaeleo caroliquarti. It was found in Europe and is 26 million years old.
Chameleons do have taste buds on their tongue but overall they have a poor sense of taste.
Chamaeleo namaquensis is found in the desert of Namibia. To cool off it will sometimes bury itself in the sand.
The word Brookesia is named after the British naturalist Joshua Brookes.
The word Rieppeleon is named after the scientist Olivier Rieppel.