An enormously developed extension of its skull lends this lizard a resemblance to the "Alien" of horror movies. In contrast to other basilisks (which can run so quickly they can…
Found from Mexico to Paraguay, this is one of the most well-known snakes, and has been popular in zoos for well over a century. It is also common in private…
This larger, more arboreal relative of the Gila monster is easily distinguished from it by being black and cream-colored, rather than black and pinkish-orange. Like the Gila monster, it is…
Found from northern Mexico to Central America, it was only separated by herpetologists from the South American Tropical Rattlesnake (Crotalus durissus) in 2004. Unlike its South American relative, but in…
There are a number of small Tropical American prehensile-tailed, tree-dwelling pit vipers, but many of them have small distributions and are very rare. This species is found all the way…
One of the most infamous of the world's venomous snakes, this species is the leading snakebite species in its habitat. It is found from southern Mexico down to Northern South…
There are more than ninety species in the genus Sceloporus, many of them familiar as "Blue-bellies", "Swifts", and "Fence Lizards". In the same family as "Horned Toads", they are found…
Most of the more than 2,000 species of geckos are nocturnal. Many are colored like bark, or in earth tones. In contrast, as their name implies, the 40 or so…
Another very large chameleon of Madagascar, this lizard is slightly smaller than the very similar Oustalet's chameleon, and differs in having fewer spikes in the crest on its back. It…
Reaching 27 inches in length, this is the biggest species of chameleon. Along with insects, it eats small birds and mammals. Like other chameleons it shoots out its tongue with…