The oldest known chameleon fossil is from the extinct species Chamaeleo caroliquarti. It was found in Europe and is 26 million years old.
Chameleons have a very poor sense of smell.
The largest chameleon species by weight is Calumma parsonii (Parson’s Chameleon).
The word Chamaeleo is derived via Latin from the Greek word khamaileon. It roughly translates to ground lion. Khamai means on the ground and leon means lion.
Trioceros goetzei (Goetze’s Chameleon) emits an audible, high pitched whistle when threatened.
The word Furcifer is derived from the Latin word “furci” or forked.
Kinyongia uthmoelleri and Trioceros quadricornis gracilor have red claws.
Chameleons have laterally compressed bodies. This enables them to warm up quickly by presenting a larger surface area to the sun. It also helps some chameleon species blend in among the similarly shaped leaves in their environment.
The smallest chameleon species is Brookesia micra with an adult length just over 1 inch (29mm). It hatches from an egg no bigger than a grain of rice!
Pygmy chameleons have bicuspid claws where each claw has two points like a crescent moon.