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Desert Collared Lizard vs. Desert Spiny Lizard

Both are big, black-marked desert lizards on rocks; their records overlap widely in the Mojave Desert. A: Two black collars right across the back of the neck in the Desert Collared Lizard; a black wedge on each side of the neck, not meeting on top in the Desert Spiny Lizard. B: Tiny, smooth and grain-like in the Desert Collared Lizard; big, keeled and spiny in the Desert Spiny Lizard. The collared lizard also has a big head and runs on its hind legs.

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Desert Collared Lizard

Crotaphytus bicinctores

Desert Spiny Lizard

Sceloporus magister
Desert Collared Lizard vs. Desert Spiny Lizard: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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