Desert Collared Lizard vs. Pygmy Short-horned Lizard

Both live in southern Idaho. The Desert Collared Lizard has two black collars across the neck, a big broad head and tiny grainy scales; the Pygmy Short-horned Lizard has a tiny, flat, round body with stubby horns. A: Desert Collared Lizard, no horns: a big, broad head; Pygmy Short-horned Lizard, tiny, stubby horns. B: Desert Collared Lizard, slim, with a long, round tail; Pygmy Short-horned Lizard, flat and round, tiny, with a short tail.

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

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