Chameleons do not have external ears or a tympanic membrane, but they do have internal ears as well as degenerated middle ears. They do not hear well but they can detect low frequency sounds.
The word Rieppeleon is named after the scientist Olivier Rieppel.
The chameleon tongue accelerates towards its target at over 1642m per second. Chameleons rarely miss their intended food item.
Trioceros schubotzi can be found at elevations as high as 4500m.
Pygmy chameleons have bicuspid claws where each claw has two points like a crescent moon.
Some chameleons play dead to avoid predation; this is called thanatosis.
Many chameleon species have a bright red, orange or yellow mouth. This conspicuous interior when displayed is used as a defense against predators.
Trioceros goetzei (Goetze’s Chameleon) emits an audible, high pitched whistle when threatened.
True chameleons include the following genera: Archaius, Bradypodion, Brookesia, Calumma, Chamaeleo, Furcifer, Kinyongia, Nadzikambia, Palleon, Rhampholeon, Rieppeleon and Trioceros.
Chameleons do have taste buds on their tongue but overall they have a poor sense of taste.