Mexican beaded lizard debate among scientists. However, this venom has been found to contain several enzymes useful for manufacturing drugs in the treatment of diabetes, and research on the pharmacological use of its venom is ongoing. Threatened throughout its range by overcollection and habitat loss, it is a CITES protected species. The Guatemalan beaded lizard ("H. charlesbogerti" ) is one of the rarest lizards in the world, with a wild population of fewer than 200. The beaded lizards have one close living relative, the Gila monster ("H. suspectum"), as well as many extinct relatives in the Helodermatidae, whose genetic history may be traced
Northern caiman lizard Northern caiman lizard The northern caiman lizard, "Dracaena guianensis", is a species of lizard found in northern South America. The caiman lizard is built similarly to its cousin the tegu, with a large heavy set body and short but powerful limbs. Its head is bulky and often a red or orange color. Their jaws are heavily muscular to help aid in eating its normal prey of snails, crawfish and fresh water clams. It also has a few adaptations that help it in its watery habitat. It has a long and flattened tail, similar to its namesake, the caiman. The long