The largest chameleon species by weight is Calumma parsonii (Parson’s Chameleon).
The word Kinyongia is from the Swahili word for chameleons: Kinyonga.
The word Rieppeleon is named after the scientist Olivier Rieppel.
Chameleons can project their tongue up to 2.2 times their body length.
The oldest known chameleon fossil is from the extinct species Chamaeleo caroliquarti. It was found in Europe and is 26 million years old.
The process of shedding is called ecdysis.
Chameleon fossils have been found in central Europe and China, indicating they were once much more widespread than they are now.
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.
True chameleons include the following genera: Archaius, Bradypodion, Brookesia, Calumma, Chamaeleo, Furcifer, Kinyongia, Nadzikambia, Palleon, Rhampholeon, Rieppeleon and Trioceros.
Many chameleon species have a bright red, orange or yellow mouth. This conspicuous interior when displayed is used as a defense against predators.