Western Whiptail vs. Desert Collared Lizard

Both live in southern Idaho. The Western Whiptail has pale stripes broken by dark bars into a checkered pattern, tiny grainy scales and a very long tail; the Desert Collared Lizard has two black collars across the neck, a big broad head and tiny grainy scales. A: Western Whiptail, no collar and no dark blotch behind the front leg; Desert Collared Lizard, two black collars across the neck. B: Western Whiptail, tiny, grain-like scales; Desert Collared Lizard, tiny, grain-like scales. C: Western Whiptail, pale stripes broken by dark bars and spots: checkered; Desert Collared Lizard, small pale spots and crossbars.

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

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