Gila monster Gila monster The Gila monster ("Heloderma suspectum", ) is a species of venomous lizard native to the southwestern United States and northwestern Mexican state of Sonora. A heavy, typically slow-moving lizard, up to long, the Gila monster is the only venomous lizard native to the United States and one of only two known species of venomous lizards in North America, the other being its close relative, the Mexican beaded lizard ("H. horridum"). Although the Gila monster is venomous, its sluggish nature means it represents little threat to humans. However, it has acquired a fearsome reputation, and is sometimes killed despite
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