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Texas Horned Lizard vs. Greater Short-horned Lizard

They meet where the grassland of southeastern Arizona climbs into the mountains. A: Two long horns in the Texas Horned Lizard; tiny, stubby horns with a deep notch between them in the Greater Short-horned Lizard. B: Two rows in the Texas Horned Lizard; one row in the Greater Short-horned Lizard. C: A crisp pale stripe down the middle in the Texas Horned Lizard; no pale stripe in the Greater Short-horned Lizard.

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Texas Horned Lizard

Phrynosoma cornutum

Greater Short-horned Lizard

Phrynosoma hernandesi
Texas Horned Lizard vs. Greater 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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