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
Transvaal grass lizard on slopes and ridges. This lizard is ovoviviparous, meaning mothers carry eggs inside their bodies until they are ready to hatch. Neither the Southern African Red Data nor the International Red Data list the Transvaal grass lizard. However, the Swaziland Red Data puts the lizard at Near Threatened levels. The scientific name of this lizard, Chamaesaura aenea, is due to the lizard's copper color. Aenea is a Latin word meaning "bronze" or "copper." Transvaal grass lizard The Transvaal grass lizard, also known as the Coppery grass lizard and Transvaal snake lizard, is a species of lizard in the genus Chamaesaura.