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.
Many chameleon species have a bright red, orange or yellow mouth. This conspicuous interior when displayed is used as a defense against predators.
The word Kinyongia is from the Swahili word for chameleons: Kinyonga.
Pygmy chameleons are sometimes referred to as False Chameleons. This term is actually incorrect and is in reference to anoles, particularly the Cuban False Anole.
Chameleons do have taste buds on their tongue but overall they have a poor sense of taste.
Pygmy chameleons have bicuspid claws where each claw has two points like a crescent moon.
The horns on a chameleon are made up of ringlike segments of inner bone covered by a hard keratin-like skin.
The word Bradypodion comes from the latin “bradus podos” or slow foot.
Chameleons have a high midichlorian count.
The oldest known chameleon fossil is from the extinct species Chamaeleo caroliquarti. It was found in Europe and is 26 million years old.