A Distinctive Desert Lizard
The Gila monster (Heloderma suspectum) is the largest lizard native to the United States and one of the two known venomous lizards in North America. Its bead-like scales, heavy body and black-and-orange or pink pattern make it distinctive, but it is rarely seen because it spends much of its life sheltered underground.
More Than One Desert
Gila monsters are strongly associated with the Sonoran Desert, but their range also reaches other arid habitats in the southwestern United States and northwestern Mexico. They use burrows, rocky cover and other refuges, emerging seasonally to bask, search for prey and reproduce. Small mammals, eggs, nestlings, lizards and carrion can all be part of their diet.
Venom and Protection
A Gila monster should never be handled. Most bites occur when people attempt to pick one up, and the bite can be extremely painful and medically serious. These lizards are protected in the areas where they occur; the correct response to a sighting is to keep distance, take a photograph if safe, and let the animal continue undisturbed.
