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Western Fence Lizard vs. Desert Collared Lizard

Both live in southern Idaho. The Western Fence Lizard has large, keeled, pointed back scales and yellow-orange on the rear of the thighs; the Desert Collared Lizard has two black collars across the neck, a big broad head and tiny grainy scales. A: Western Fence Lizard, no collar and no dark blotch behind the front leg; males have a blue throat patch; Desert Collared Lizard, two black collars across the neck. B: Western Fence Lizard, large, keeled, pointed scales: spiny; Desert Collared Lizard, tiny, grain-like scales. C: Western Fence Lizard, wavy dark bars down each side of the back; Desert Collared Lizard, small pale spots and crossbars.

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Western Fence Lizard

Sceloporus occidentalis

Desert Collared Lizard

Crotaphytus bicinctores
Western Fence Lizard vs. Desert Collared 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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