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Twin-spotted Rattlesnake vs. Sonoran Lyre Snake

Both are grey, blotched snakes of rocky slopes in the southeastern mountains. A: Two rows of small dark spots on grey, joining into one row near the tail in the Twin-spotted Rattlesnake; dark saddles split by pale centres in the Sonoran Lyre Snake. B: Broad, with a dark stripe behind the eye in the Twin-spotted Rattlesnake; a lyre-shaped mark on top of the head in the Sonoran Lyre Snake. C: A rattle in the Twin-spotted Rattlesnake; no rattle in the Sonoran Lyre Snake. Both Ridge-nosed and Twin-spotted Rattlesnakes are protected in Arizona. Venomous: leave rattlesnakes alone and give them room.

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Twin-spotted Rattlesnake

Crotalus pricei

Sonoran Lyre Snake

Trimorphodon lambda
Twin-spotted 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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