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Eastern Collared Lizard vs. Yarrow's Spiny Lizard

Both have black collars and sit on rocks in the mountains of central and southeastern Arizona. A: Two black collars that do not meet under the throat in the Eastern Collared Lizard; one broad, complete black collar edged with white in the Yarrow's Spiny Lizard. B: Small granular scales with pale dots in the Eastern Collared Lizard; big, keeled spiny scales, each pale edged black in the Yarrow's Spiny Lizard.

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Eastern Collared Lizard

Crotaphytus collaris

Yarrow's Spiny Lizard

Sceloporus jarrovii
Eastern Collared Lizard vs. Yarrow's 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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