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.
Kinyongia uthmoelleri and Trioceros quadricornis gracilor have red claws.
The largest chameleon species by weight is Calumma parsonii (Parson’s Chameleon).
Furcifer labordi (Labord’s Chameleon) has the shortest lifespan of only 4-5 months. It also has the shortest lifespan of any tetrapod!
Many chameleon species have a bright red, orange or yellow mouth. This conspicuous interior when displayed is used as a defense against predators.
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.
The word Calumma comes from the Latin word for covering. This genus consists of chameleons from Madagascar with occipital lobes.
The horns on a chameleon are made up of ringlike segments of inner bone covered by a hard keratin-like skin.
Some chameleons play dead to avoid predation; this is called thanatosis.
Trioceros schubotzi can be found at elevations as high as 4500m.