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
Giant plated lizard Giant plated lizard The giant plated lizard ("Gerrhosaurus validus") is a lizard of the Gerrhosauridae family, which is found in dry to mesic habitats of southern Africa. They are wary and stay close to their rocky retreats. A large lizard with a flattened head and body, its length is a maximum of . The soles of the feet have black rubber-like balls, an adaptation to living on rock outcrops. It is called the plated lizard because of the platelike scales on the back. This lizard is very shy and hard to approach. When threatened, it will jam itself into rock