The horns on a chameleon are made up of ringlike segments of inner bone covered by a hard keratin-like skin.
True chameleons include the following genera: Archaius, Bradypodion, Brookesia, Calumma, Chamaeleo, Furcifer, Kinyongia, Nadzikambia, Palleon, Rhampholeon, Rieppeleon and Trioceros.
Some chameleons play dead to avoid predation; this is called thanatosis.
There are currently 202 recognized chameleon species and 85 of them are found on the island of Madagascar.
The largest chameleon species by weight is Calumma parsonii (Parson’s Chameleon).
Furcifer oustaleti (Oustalet’s Chameleon) is the longest chameleon species reaching lengths of 27 inches (68cm).
The word Rieppeleon is named after the scientist Olivier Rieppel.
Kinyongia uthmoelleri and Trioceros quadricornis gracilor have red claws.
Trioceros goetzei (Goetze’s Chameleon) emits an audible, high pitched whistle when threatened.
Trioceros schubotzi can be found at elevations as high as 4500m.