Adult San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), endemic to Isla San Esteban, Baja California, Mexico, North America

Adult San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), endemic to Isla San Esteban, Baja California, Mexico, North America

Desert Spiny Lizard (Sceloporus magister) in Sand Hollow State Park near St. George, Utah, United States of America

Adult San Esteban spiny-tailed iguana (Ctenosaura conspicuosa), endemic to Isla San Esteban, Baja California, Mexico, North America

An adult male desert spiny lizard (Sceloporus magister), under a ledge in Grand Canyon National Park, Arizona, United States of America, North America

An adult male desert spiny lizard (Sceloporus magister), under a ledge in Grand Canyon National Park, Arizona, United States of America, North America

An adult male desert spiny lizard (Sceloporus magister), under a ledge in Grand Canyon National Park, Arizona, United States of America, North America

An adult desert spiny lizard (Sceloporus magister), Brandi Fenton Park, Tucson, Arizona, United States of America, North America