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 Brookesia is named after the British naturalist Joshua Brookes.
The oldest known chameleon fossil is from the extinct species Chamaeleo caroliquarti. It was found in Europe and is 26 million years old.
Some chameleons play dead to avoid predation; this is called thanatosis.
Chameleons can project their tongue up to 2.2 times their body length.
The chameleon tongue accelerates towards its target at over 1642m per second. Chameleons rarely miss their intended food item.
Chameleons have acrodont teeth meaning they are an extension of the jawbone. They are not set in sockets nor are they replaced.
The word Furcifer is derived from the Latin word “furci” or forked.
Kinyongia uthmoelleri and Trioceros quadricornis gracilor have red claws.
Chamaeleo namaquensis is found in the desert of Namibia. To cool off it will sometimes bury itself in the sand.