Southeastern California, southern Nevada and Utah, and western Arizona. Its range also stretches south down both coasts of the Gulf of California.
This species prefers rocky desert terrain with lots of crevices for hiding.
This thick-bodied prehistoric looking lizard has a flat, wide abdomen, often with some loose wrinkly skin on its sides and neck. It has slightly rough skin on its body, with much rougher scales on its blunt-tipped tail. Its earthy coloration is sexually dimorphic and varies to match its rocky surroundings. It can reach 20 inches in length and weigh up to 2 pounds. Adults do not have any distinct patterning.
Learn more with Schechter Natural History's Guide to Reptiles and Amphibians