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!
Chameleons can project their tongue up to 2.2 times their body length.
Chameleon fossils have been found in central Europe and China, indicating they were once much more widespread than they are now.
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 process of shedding is called ecdysis.
Chameleons have acrodont teeth meaning they are an extension of the jawbone. They are not set in sockets nor are they replaced.
Chameleons have a high midichlorian count.
Trioceros schubotzi can be found at elevations as high as 4500m.
Kinyongia uthmoelleri and Trioceros quadricornis gracilor have red claws.