Regal Horned Lizard

Horned lizards are found throughout the Sonoran Desert region from near sea level up to 11,300 feet (3440 m). Some species are widespread, such as the round-tailed and Texas horned lizards which occur in several U.S. and Mexican states, while the flat-tailed horned lizard (P. mcalli) is restricted to southwestern Arizona, extreme southeastern California, a small part of northeastern Baja California and the upper neck of northwestern Sonora, Mexico.