Jack Dykinga / Greater roadrunner (Geococcyx californianus) with Desert spiny desert lizard (Sceloporus magister) prey, Catalina State Park, Arizona, Sonoran Desert, USA. August.
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Jim Brandenburg / Desert Spiny Lizard (Sceloporus magister) sunning on rock, Monument Valley National Monument, Arizona
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Cyril Ruoso / Desert Spiny Lizard (Sceloporus magister) in defensive posture, El Vizcaino Biosphere Reserve, Mexico
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Daniel Heuclin / Desert spiny lizard (Sceloporus magister) portrait, Mohave national preserve, California, USA, June
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David Welling / Yellow-backed spiny lizard (Sceloparus uniformis / magister) perches on a rock along Chalk Cliffs Road, Bishop, California United States
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Daniel Heuclin / Desert spiny lizard (Sceloporus magister) Panamint mountains, Death valley National Park. California. USA. Controlled conditions.
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Daniel Heuclin / Desert spiny lizard (Sceloporus magister) held in the hand to show underside, Panamint mountains,Death valley National Park. California. USA. Controlled conditions.
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John Cancalosi / Desert Spiny Lizard (Sceloporus magister) Sonoran Desert, Arizona, USA
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Philippe Clement / Desert spiny lizard (Sceloporus magister) climbing Ocotillo (Fouquieria splendens). Saguaro National Park, Arizona, USA
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Philippe Clement / Desert spiny lizard (Sceloporus magister) on rock showing camouflage colours. Saguaro National Park, Arizona, USA
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Philippe Clement / Desert spiny lizard (Sceloporus magister) male showing throat in mating season colours. Saguaro National Park, Arizona, USA
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Philippe Clement / Desert spiny lizard (Sceloporus magister) close-up on rock. Saguaro National Park, Arizona, USA