The horns on a chameleon are made up of ringlike segments of inner bone covered by a hard keratin-like skin.
The oldest known chameleon fossil is from the extinct species Chamaeleo caroliquarti. It was found in Europe and is 26 million years old.
Pygmy chameleons have bicuspid claws where each claw has two points like a crescent moon.
The word Rhampholeon is taken from the Latinized Greek “rhamphos leon” meaning crawling lion.
The word Furcifer is derived from the Latin word “furci” or forked.
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 Rieppeleon is named after the scientist Olivier Rieppel.
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!
Kinyongia uthmoelleri and Trioceros quadricornis gracilor have red claws.
Trioceros goetzei (Goetze’s Chameleon) emits an audible, high pitched whistle when threatened.