The Peninsular population of desert bighorn sheep are native ungulates that live on the desert slopes of the Peninsular Ranges in San Diego, Riverside, and Imperial Counties. This population, which ranges from the San Jacinto Mountains south to the U.S.-Mexico border, is federally listed as endangered. Desert bighorn sheep inhabit rocky slopes and cliffs, canyons, washes and alluvial fans. Like other bighorn sheep, they prefer rugged and open habitat, and use their climbing abilities, vigilance, and excellent vision to detect and escape from predators. They are generalist herbivores and eat a wide variety of desert plants, including cacti. 

All images taken by the talented Jeff Young