The Sonoran Desert is a North American desert that covers large parts of the US states of Arizona and California, as well as the Mexican states of Sonora, Baja California, and Baja California Sur. The desert is home to a wide variety of plants and animals, including the saguaro cactus, the organ pipe cactus, and the ocotillo. The desert is also home to a number of Native American tribes, including the Pima, Papago, and Yaqui.