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
Cuban night lizard Cuban night lizard The Cuban night lizard ("Cricosaura typica") is a night lizard (family Xantusiidae, subfamily Cricosaurinae) endemic to southern Cuba. It is the only member of the genus "Cricosaura", one of three in the night lizard family. "Cricosaura" is derived from the Greek words "krikos" and "saura" meaning "ring lizard", perhaps in reference to the rings of caudal scales. The name ""typica"", from the Greek word "typikos", means "typical". The Cuban night lizard differs from the other night lizards in possessing two frontonasal scales, one frontal scale, no parietal scale, and a fourth finger with four phalanges. With a