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Reptiles of the United States  
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A Guide to the Reptiles &
Amphibians of the United States
U.S. Reptile Guide snakes lizards Turtles turtles salamanders Alligators of the US
Snakes of the U.S.


Iguanids of the United States

Iguanids range from 4" to 72" in length. A typical iguanid is of moderate size, has 5 clawed toes on each of four legs, and a long tail. Its teeth are attached to a ledge on the inside of the jaw. Most species are either arboreal or terrestrial and feed on insects and other invertbrates, but some, like Dipsosaurus and Sauromalus eat leaves, fruit, and blossoms. Except for a very few species that live in cool mountina habitiats and give birth to living young, iguanids are egg-layers. Clutches of many eggs or offspring are the rule, but Anolis lays one one egg every couple of weeks.

Iguanids are possibly the most visually orientated of all lizards. They communicate at a distance by a show of color and behavioral signals. Mates are courted, territories defended, and interlopers driven off by elaborate and precisely timed combinations of head-bobbing, body push-ups, and open mouth displays that are unique to each species. Some further enhance the effect bu curling the tail, inflating the chest and throat, or extending the throatfan, all of which expose a bright patch of color to the view of another lizard. Some species exhibit intense color during mating season.


There are 52 species of Iguanids in the U.S.

Green Anole (Anolis carolinensis)

Found in southern Virginia to the Florida Keys, west to central Texas and Oklahoma.

Crested Anole (Anolis cristatellus)

Introduced into Miami, Florida. Native to the Carribean Islands.

Large-Headed Anole (Anolis cybotes)

Introduced into northeast Dade County, Florida. Native to Hispaniola.

Bark Anole (Anolis distichus)

Introduced to southern Florida from the Bahamas and Hispaniola.

Knight Anole (Anolis equestris)

Introduced into Dade and Broward counties, Florida. Native to Cuba.

Brown Anole (Anolis sagrei)

Introduced into peninsular Florida. Native to Jamaica, Cuba, and the Bahamas

Zebra-Tailed Lizard (Callisaurus draconiodes)

Found from central Nevada and extreme southwestern Utah, south through Arizona and southeastern California into Mexico.

Greater Earless Lizard (Cophosaurus texanus)

Found fro, central Arizona through southern Texas and into Mexico.

Collared Lizard (Crotaphytus collaris)

Found from eastern Utah and Colorado to extreme southwestern Illinois, south through central Texas into Mexico and west into central Arizona.

Desert Collared Lizard (Crotaphytus insularis)

Found from southeastern Oregon and adjacent Idaho, western Utah, south into Arizona and southeastern California.

Reticulated Collared Lizard (Crotaphytus reticulatus)

Found from the Rio Grande Valley of southern Texas and adjacent Mexico.

Spiny-Tailed Iguana (Ctenosaura pectinata)

Introduced into southern Texas at Brownsville and southern Florida at Miami. Native to Mexico.

Desert Iguana (Dipsosaurus dorsalis)

Found from southern California, Nevada, and western Arizona south into Mexico.

Blunt-Nosed Leopard Lizard (Gambelia silus)

Found in the San Joaquin Valley and surrounding foothill in California.

Leopard Lizard (Gamvelia wislizenii)

Found from southern Oregon and Idaho to southwestern Wyoming south to western Texas and into Mexico, west through southern California and Baja Califormia.

Spot-Tailed Earless Lizard (Holbrookia lacerata)

Found from central and southern Texas and adjacent Mexico.

Lesser Earless Lizard (Holbrookia maculata)

Found from southern South dakota through the Great Plains to central Texas, west through most of New Mexico, Colorado, and extreme southeastern Wyoming.

Keeled Earless Lizard (Holbrookia propinqua)

Found in southern Texas and into Mexico.

Common Iguana (Iguana iguana)

Introduced into Miami and Fort Lauderdale, Florida. Native to Central and north South America.

Curly-Tailed Lizard (Leiocepphalus carinatus)

Introduced into southern Florida. native to Cuba and the Bahamas.

Banded Rock Lizard (Pterosaurus mearnsi)

Found from southern California into northern Baja California.

Texas Horned Lizard (Phrynosoma cornutum)

Found from Kansas to Texas and west to southeastern Arizona with isolated population in Louisiana and introduced in northern Florida.

Coast Horned Lizard (Phrynosoma coronatum)

Found in most of western California into Baja California.

Short-Horned Lizard (Phrynosoma douglassi)

Found from southern British Columbia to northern Calfornia, southern Idaho, and most of Utah, southern Saskatchenwan, southeast to Kansas, and south into Mexico. Sperate populations in western Texas.

Flat-Tailed Horned Lizard (Phrynosoma m'calli)

Found from southeastern California and adjacent Arizona and Mexico.

Round-Tailed Horned Lizard (Phrynosoma modestum)

Found from southeastern Arizona through southern New Mexico to western Texas, and south into Mexico.

Desert Horned Lizard (Phrynosoma platyrhinos)

Found from southeastern Oregon and southern Idaho south through eastern California and western Arizona into Mexico.

Regal Horned Lizard (Phrynosoma solare)

Found from southern Arizona into Mexico.

Chuckwalla (Sauromalus obesus)

Found from southeastern California, southern Nevada, Utah, western Arizona and adjacent Mexico.

Clark's Spiny Lizard (Sceloporus clarki)

Found from central and southern Arizona to southwestern New Mexico into Mexico.

Blue Spiny Lizard (Sceloporus cyanogenys)

Found from southern Texas along the Rio Grande and into Mexico.

Sagebrush Lizard (Sceloporus graciosus)

Found from southern Montana to northwestern New Mexico and west to Washington, Oregon.

Mesquite Lizard (Sceloporus grammicus)

Found from extreme southern Texas and into Mexico.

Yarrow's Spiny Lizard (Sceloporus jarrovi)

Found from southeastern Arizona and southwestern New Mexico.

Desert Spiny Lizard (Sceloporus magister)

Found from southern Nevada south into Baja California and southeast through Arizona, New Mexico, and western Texas with an isolated population in central California.

Canyon Lizard (Sceloporus merriami)

Found from southwestern Texas and adjacent Mexico.

Western Fence Lizard (Sceloporus occidentalis)

Found from central Idaho south through Nevada and west to the Pacific coast.

Texas Spiny Lizard (Sceloporus olivaceus)

Found from extreme south-central Oklahoma through the prairie of central Texas and into Mexico.

Granite Spiny Lizard (Sceloporus orcutti)

Found from southern California and the Baja peninsula.

Crevice Spiny Lizard (Sceloporus poinsetti)

Found from southern New Mexico to central Texas and south into Mexico.

Bunch Grass Lizard (Sceloporus scalaris)

Found from the mountains of southeastern Arizona and extreme southwestern New Mexico into Mexico.

Eastern Fence Lizard (Sceloporus undulatus)

Found from Delaware to Florida and west to New Mexico and Arizona.

Rose-Bellied Lizard (Sceloporus variabilis)

Found from extreme south-central Texas to Costa Rica.

Striped Plateau Lizard (Sceloporus virgatus)

Found from extreme southeastern Arizona and southwestern New Mexico and adjacent Mexico.

Florida Scrub Lizard (Sceloporus woodi)

Found in central and southern Florida.

Coachella Valley Fringe-Toed Lizard (Uma inornata)

Found in the Coachella Valley and San Gorgonio Pass, Riverside County, California.

Fringe-Toed Lizard (Uma notata)

Found in southeastern California, southwestern Arizona and adjacent Mexico.

Mojave Fringe-Toed Lizard (Uma scoparia)

Found in the Mojave Desert in California and extreme western Yuma County, Arizona.

Long-Tailed Brush Lizard (Urosaurus graciosus)

Found in southern Nevada, western Arizona, southeastern California, and adjacent Mexico.

Small-Scaled Tree Lizard (Urosaurus microscutatus)

Found in extreme southern California into central Baja California.

Common Tree Lizard (Urosaurus ornatus)

Found in extreme southwestern Wyoming, southeast to south-central Texas and west to extreme southeastern California.

Side-Blotched Lizard (Uta stansburiana)

Found from central Washington southeast to western Texas and Mexico, west to the Pacific coast and Baja California, north through central and eastern california to central Oregon.


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