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
Western green lizard Western green lizard The western green lizard (Lacerta bilineata) is a wall lizard of the Lacertidae family. The genus name "Lacerta" and the species name "bilineata" are Latin words respectively meaning “lizard” and “with two lines”, with reference to the pale lines present on the flanks of the young individuals. It is found in Andorra, Croatia, France, Germany, Italy, Monaco, Serbia, Slovenia, Spain, Switzerland, on Jersey in the British Isles, and the United States. There are also colonies on the south coast of the U.K, notably around Poole Bay in Dorset. "Lacerta bilineata" reaches an average length (excluding tail) of