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Panamint Rattlesnake vs. Sidewinder

Both live in the Mojave Desert; their records overlap widely. A: No horn in the Panamint Rattlesnake; a raised, pointed horn over each eye in the Sidewinder. B: Clear crossbands in the Panamint Rattlesnake; small pale blotches in rows in the Sidewinder. The Panamint lives on rocky slopes, the Sidewinder on sand flats. Both very venomous.

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Panamint Rattlesnake

Crotalus stephensi

Sidewinder

Crotalus cerastes
Panamint 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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