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Regal Horned Lizard vs. Greater Short-horned Lizard

They meet where the desert grassland of southeastern and central Arizona climbs into oak and pine woodland, where the Greater Short-horned lives. A: Four big, dagger-like horns side by side, bases touching in the Regal Horned Lizard; tiny, stubby horns with a wide gap between the two middle ones in the Greater Short-horned Lizard.

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Regal Horned Lizard

Phrynosoma solare

Greater Short-horned Lizard

Phrynosoma hernandesi
Regal 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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