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The Desert Horned Lizard, Phrynosoma platyrhinos, is native to western North America. Two subspecies are recognized. The Northern Desert Horned Lizard is found in Idaho, Utah, Nevada and parts of Montana. The Southern Desert Horned Lizard is commonly found in southern Utah and Nevada to southeast California, western Arizona and northern Baja California. Desert Horned Lizards range in size from three to five inches long. They have a distinctive flat-body with one row of fringed scales down...

The Long-nosed Leopard Lizard, Gambelia wislizenii, is a large predatory member of the Collared lizard family. Their range extends over most of the western United States and into northern Mexico. The epithet wislizenii is in honor of the German-American surgeon and naturalist Frederick Adolph Wislizenius, who caught the first specimen near Santa Fe, New Mexico. The Long-nosed Leopard Lizard is a large lizard with a large head, long snout, and long round tail. Females, measuring about 5.8...

The blunt-nosed leopard lizard, Gambelia silus, is a relatively large lizard belonging to the Iguanidae family. It has a long, regenerative tail, powerful hind limbs, and a short, blunt snout. Adult males are slightly larger than females, ranging in size from 3.4 to 4.7 inches in length, excluding the tail. Females are 3.4 to 4.4 inches long. Males weigh 1.3 to 1.5 ounces, females 0.8 to 1.2. Although blunt-nosed leopard lizards are darker than other leopard lizards, they exhibit...

The Blue Iguana, Cyclura lewisi, is a critically endangered species of lizard that is found on the island of Grand Cayman. It is estimated that only 25 of these animals still survive. It is expected that the population will be extinct within the first decade of the twenty-first century. The demise of this animal is due largely in fact to the introduction of human pets and indirectly by the destruction of their natural habitat. Blue Iguanas occupy rock hole and tree cavity retreats, and as...

The Dumeril's Boa, Acrantophis dumerili, is a species of boa endemic to the island of Madagascar. Found along the western coast and southwestern regions of Madagascar, it is a semi-arid habitat that gets fairly low amounts of rainfall. Along with many other species of animals, these boas are in danger of extinction if deforestation continues at its current rate. Dumeril's Boas grow to around 6 - 7 feet long, though larger snakes are not unknown. Males have longer, flatter tails, while...