Spike is/was Raph's pet desert tortoise. It is illegal to touch, harass or otherwise harm a desert tortoise. There are threatened endemic species as sonoran pronghorn, bighorn sheep, gila monster and desert tortoise. Temperature strongly influences desert tortoise activity level. The Conservation Area is protected habitat for the desert tortoise. The availability of adequate burrow sites influences desert tortoise densities. Common wildlife include the coyote, Gambel's quail, and desert tortoise. Wildlife in Snow Canyon includes the Gila monster, peregrine falcon, and desert tortoise. Desert tortoise shelter sites are often associated with plant or rock cover. An isolated population of Agassiz's desert tortoise occurs in the Black Mountains of northwestern Arizona. Seasonal trends in burrow use are influenced by desert tortoise gender and regional variation. The area's reptilian life include the sidewinder viper, desert tortoise, and horned toad. The spiny soft-shell turtle and the desert tortoise are also found on the refuge. The desert tortoise is the state reptile of California and Nevada. Two bordering western states, California and Nevada, chose the desert tortoise.