Chameleons have a very poor sense of smell.
The largest chameleon species by weight is Calumma parsonii (Parson’s Chameleon).
The horns on a chameleon are made up of ringlike segments of inner bone covered by a hard keratin-like skin.
Furcifer labordi (Labord’s Chameleon) has the shortest lifespan of only 4-5 months. It also has the shortest lifespan of any tetrapod!
Chameleon fossils have been found in central Europe and China, indicating they were once much more widespread than they are now.
The chameleon tongue accelerates towards its target at over 1642m per second. Chameleons rarely miss their intended food item.
Some chameleons play dead to avoid predation; this is called thanatosis.
Chameleons can project their tongue up to 2.2 times their body length.
Kinyongia uthmoelleri and Trioceros quadricornis gracilor have red claws.
Many chameleon species have a bright red, orange or yellow mouth. This conspicuous interior when displayed is used as a defense against predators.