Agamidae is a family of over 300 species of iguanian lizards indigenous to Africa, Asia, Australia, and a few in Southern Europe. Many species are commonly called dragons or dragon lizards.

Phylogenetically, they may be sister to the Iguanidae, and have a similar appearance. Agamids usually have well-developed, strong legs. Their tails cannot be shed and regenerated like those of geckos, though a certain amount of regeneration is observed in some. Many agamid species are capable of limited change of their colors to regulate their body temperature. In some species, males are more brightly colored than females, and colors play a part in signaling and reproductive behaviors. Although agamids generally inhabit warm environments, ranging from hot deserts to tropical rainforests, at least one species, the mountain dragon, is found in cooler regions.

This group of lizards includes some more popularly known, such as the domesticated bearded dragon, Chinese water dragon and Uromastyx species.

One of the key distinguishing features of the agamids is their teeth, which are borne on the outer rim of their mouths (acrodonts), rather than on the inner side of their jaws (pleurodonts). This feature is shared with the chameleons, but is otherwise unusual among lizards. Agamid lizards are generally diurnal, with good vision, and include a number of arboreal species, in addition to ground- and rock-dwellers. They generally feed on insects and other arthropods (such as spiders), although some larger species may include small reptiles or mammals, nestling birds, flowers or other vegetable matter in their diets. The great majority of agamid species are oviparous.

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