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Mojave Rattlesnake vs. Sonoran Lyre Snake

Both are out at night across the deserts of western and southern Arizona; the Lyre Snake's broad head and cat-like pupils make it look like a rattlesnake. A: A rattle, with black and white rings before it in the Mojave Rattlesnake; no rattle: a slim, tapering tail in the Sonoran Lyre Snake. B: Heavy, with rough keeled scales in the Mojave Rattlesnake; slim, with smooth scales; under 30 blotches each split by a pale crossbar in the Sonoran Lyre Snake. The Lyre Snake is rear-fanged with a mild venom, harmless to people. Venomous: leave rattlesnakes alone and give them room.

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Mojave Rattlesnake

Crotalus scutulatus

Sonoran Lyre Snake

Trimorphodon lambda
Mojave Rattlesnake vs. Sonoran Lyre Snake: comparison sheet with the differences marked

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

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