Iguanas of the United States

Igunaidae range from 4 to 72 inches in length. A typical iguanid is of moderate size, has 5 clawed toes on each of its 4 legs, and a long tail, its teeth are attached to the ledge on the inside of the jaw. Most species are either arboreal or terrestrial, they feed on insects and other invertebrates, but some, like Dipsosaurus and Sauromalus eat leaves, fruit, and blossoms. Except for a very few species that live in cool mountain habitats and give birth to living young, iguanids are egg layers.

There are 4 genera, with 7 species found in the United States, only 2 are native with the other 5 species being Introduced.

(I) San Esteban Island x Sonoran Spiny-tailed Iguana (Ctenosaura conspicuosa x macrolopha)	(I) Sonoran Spiny-Tailed Iguana (Ctenosaura macrolopha)	(I) Western Spiny-Tailed Iguana (Ctenosaura pectinata)
(I) Black Spiny-Tailed Iguana (Ctenosaura similis)	Desert Iguana (Dipsosaurus dorsalis)	(I) Green Iguana (Iguana iguana)
Common Chuckwalla (Sauromalus ater)