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Last updated on April 17, 2014 at 17:30 EDT

Reptiles

The Round-tail Horned Lizard, Phrynosoma modestum, is the smallest species of horned lizard. They are found in the United States, in western Texas, New Mexico and eastern Arizona, and three states in Mexico. They prefer a sandy, semi-arid habitat with ...

The Texas Horned Lizard, Phrynosoma cornutum, is one of fourteen North American species of spike-bodied reptiles, called horned lizards. The Texas species ranges from Colorado and Kansas to northern Mexico, and from southeastern Arizona to Louisian...

The Spectacled Caiman, Caiman crocodilus, is a crocodilian reptile found in much of Central and South America. It lives in a range of lowland wetland and river habitat and can tolerate salt water as well as fresh. Due to this adaptable behavior, it is...

The American Alligator, Alligator Mississippians, is one of two species of living Alligator. It is native to the southeastern United States, where it inhabits wetlands that frequently overlap with human populated areas. It is larger than the other liv...

The Chinese Alligator, Alligator sinensis, is one of two living species of Alligator. The Chinese Alligator is native to only China. This species' wild habitat has been reduced to little more than a few ponds along the lower Yangtze River system. Its p...

The False Gharial or Malayan Gharial, Tomistoma schlegelii, is a fresh-water reptile, resembling a crocodile. This animal is native to six river systems in Sumatra and Malaysia. It is also found in Borneo, Java, Vietnam, Thailand and possibly Sulawesi....

The Stump-tailed skink, Tiliqua rugosa, is a species of lizard found in Australia. There are four subspecies recognized: the Common Shingleback the Eastern Shingleback the Island Shingleback the Shark Bay Shingleback This lizard has a hea...

The Eastern Blue-tongued lizard, Tiliqua scincoides scincoides, is a variety of skink which is common throughout Australia. They are often found in bush land and suburban areas where conditions are suitable. They are known as blue-tongues because their...

The Pygmy Rattlesnake, Sistrurus miliarius, is a species of venomous rattlesnake found in the southeastern United States. There are three subspecies of this snake. They are generally a small species that grow to between 15 to 31 inches in length. Ph...

The Desert Massasauga, Sistrurus catenatus edwardsii, is a subspecies of the Massasauga rattlesnake. It is found in the southwestern United States, primarily in Texas, New Mexico and Arizona. There are also small populations in Colorado, Oklahoma, Cali...

The Massasauga, Sistrurus catenatus, is a species of venomous rattlesnake found in the United States, primarily in the Great Lakes region from New York to Illinois, including Ontario in Canada. Some isolated populations are found as far south as northe...

The Ridge-nosed Rattlesnake, Crotalus willardi, is a small species of venomous rattlesnake found in the southwestern United States and Mexico. It is rarely found outside habitats of high elevation. They are found primarily in wooded mountain ranges p...

The Hopi Rattlesnake, Crotalus viridis nuntius, is a species of venomous rattlesnake native mainly to the desert plateau of the northeastern area of Arizona, but also ranges into northwestern New Mexico. Named for the Native American Hopi tribe, which ...

The Mojave Rattlesnake, Crotalus scutulatus, also known as the Mojave rattler, desert diamondback, and scutulated rattlesnake, is a venomous pit viper species commonly found in the southwestern United States and central Mexico. They are primarily found...

The Black-tailed Rattlesnake, Crotalus molossus, is a species of venomous rattlesnake found in the South-Western United States and Mexico. Although they are good climbers and expert swimmers, they are mostly terrestrial and can be found in grasslands, ...

The Speckled Rattlesnake, Crotalus mitchellii, is a species of rattlesnake found in the Southwestern United States, and in northern Mexico. There are three subspecies currently recognized. The Angel de la Guarda Speckled Rattlesnake and the El Muert...

The Banded Rock Rattlesnake, Crotalus lepidus klauberi, is a subspecies of venomous rock rattlesnake found in the southern United States, including Arizona, New Mexico and Texas, and into northern Mexico. They are often found in canyons, hilly slopes, ...

The Sidewinder, Crotalus cerastes, is a species of rattlesnake that inhabits lowland deserts of the southwestern United States, including Arizona, California, Nevada, and Utah, and northern Mexico. This species is nocturnal during hot months and diurna...

The Western Diamondback Rattlesnake, Crotalus atrox, is a species of venomous rattlesnake found in the United States and Mexico. It is found in California, Arizona, New Mexico, Oklahoma and Texas. It prefers flatlands and prairies to the rocky hills an...

The Western Green Mamba, Dendroaspis viridis, also called the West African green mamba, is a venomous snake native to West Africa, including Liberia and Côte d'Ivoire. Its habitat is rainforest. This snake grows to a length of 6.5 feet and is t...