The word Rhampholeon is taken from the Latinized Greek “rhamphos leon” meaning crawling lion.
The word Furcifer is derived from the Latin word “furci” or forked.
The word Rieppeleon is named after the scientist Olivier Rieppel.
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.
True chameleons include the following genera: Archaius, Bradypodion, Brookesia, Calumma, Chamaeleo, Furcifer, Kinyongia, Nadzikambia, Palleon, Rhampholeon, Rieppeleon and Trioceros.
Trioceros goetzei (Goetze’s Chameleon) emits an audible, high pitched whistle when threatened.
Kinyongia uthmoelleri and Trioceros quadricornis gracilor have red claws.
Chameleons do have taste buds on their tongue but overall they have a poor sense of taste.
Chameleons have acrodont teeth meaning they are an extension of the jawbone. They are not set in sockets nor are they replaced.
The chameleon tongue accelerates towards its target at over 1642m per second. Chameleons rarely miss their intended food item.