Chamaeleo namaquensis is found in the desert of Namibia. To cool off it will sometimes bury itself in the sand.
Chameleon fossils have been found in central Europe and China, indicating they were once much more widespread than they are now.
Chameleons can project their tongue up to 2.2 times their body length.
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 horns on a chameleon are made up of ringlike segments of inner bone covered by a hard keratin-like skin.
The word Brookesia is named after the British naturalist Joshua Brookes.
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.
There are currently 202 recognized chameleon species and 85 of them are found on the island of Madagascar.
True chameleons include the following genera: Archaius, Bradypodion, Brookesia, Calumma, Chamaeleo, Furcifer, Kinyongia, Nadzikambia, Palleon, Rhampholeon, Rieppeleon and Trioceros.
Pygmy chameleons have bicuspid claws where each claw has two points like a crescent moon.