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 alligator lizard coast and can be found from sea level up to elevation of about . It is found in a variety of forested habitats and montane chaparral. Northern alligator lizard The northern alligator lizard ("Elgaria coerulea") is a medium-sized lizard that occurs on the North American west coast. The northern alligator lizard was formerly known by the scientific name of "Gerrhonotus coeruleus" , but is nowadays assigned to the genus "Elgaria". Four subspecies are recognized as being valid, including the nominotypical subspecies: "Nota bene": A trinomial authority in parentheses indicates that the subspecies was originally described in a genus other than