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
Pyrenean rock lizard Pyrenean rock lizard The Pyrenean rock lizard (Iberolacerta bonnali ) is a species of lizards in the family Lacertidae. It is endemic to the Pyrenees where it occurs at high altitudes and is only active in summer. The specific name, "bonnali", is in honor of the Count of Bonnal who collected amphibians and reptiles while living at Montgaillard, Hautes-Pyrénées. The Aran rock lizard was initially included here as a subspecies, "Iberolacerta bonnali aranica", but is now considered a distinct species, "Iberolacerta aranica". The Pyrenean rock lizard is a large lizard growing to a snout-to-vent length of with a tail about