The Gila Monster (pronounce /ˈhiːlə/, HEE-la) (Heloderma suspectum) is a species of venomous lizard native to the southwestern United States and northern Mexico. A heavy, slow moving lizard, up to 60 cm (2 ft) long, the Gila Monster is the only venomous lizard native to the United States, and only one of only two known species of venomous lizard in North America, the other being its close relative the Mexican Beaded Lizard (H. horridum). Though the Gila monster is venomous, its slowness means that it represents little threat to humans. However, it has earned a fearsome reputation, and is often killed by hikers and homeowners, despite the fact that it is protected by state law in Arizona and Nevada.