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Twin-spotted Rattlesnake vs. Sidewinder

Their ranges barely touch; the Sidewinder lives on low sandy desert. A: Two rows of small dark spots on grey, joining into one row near the tail in the Twin-spotted Rattlesnake; pale, sandy, with faint blotches in the Sidewinder. B: No horns over the eyes in the Twin-spotted Rattlesnake; a horn-like scale over each eye in the Sidewinder. 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

Sidewinder

Crotalus cerastes
Twin-spotted Rattlesnake vs. Sidewinder: comparison sheet with the differences marked

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

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