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Western Whiptail vs. Pygmy Short-horned 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 Pygmy Short-horned Lizard has a tiny, flat, round body with stubby horns. A: Western Whiptail, no horns: a long, pointed head; Pygmy Short-horned Lizard, tiny, stubby horns. B: Western Whiptail, slim, with a very long tail; Pygmy Short-horned Lizard, flat and round, tiny, with a short tail.

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Western Whiptail

Aspidoscelis tigris

Pygmy Short-horned Lizard

Phrynosoma douglasii
Western Whiptail vs. Pygmy Short-horned 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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