Furcifer oustaleti (Oustalet’s Chameleon) is the longest chameleon species reaching lengths of 27 inches (68cm).
Chameleons can project their tongue up to 2.2 times their body length.
The smallest chameleon species is Brookesia micra with an adult length just over 1 inch (29mm). It hatches from an egg no bigger than a grain of rice!
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.
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 chameleon tongue accelerates towards its target at over 1642m per second. Chameleons rarely miss their intended food item.
The largest chameleon species by weight is Calumma parsonii (Parson’s Chameleon).
Chameleon fossils have been found in central Europe and China, indicating they were once much more widespread than they are now.
The word Brookesia is named after the British naturalist Joshua Brookes.
The horns on a chameleon are made up of ringlike segments of inner bone covered by a hard keratin-like skin.