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Western Black-tailed Rattlesnake vs. Southwestern Speckled Rattlesnake

They meet on rocky slopes of west-central Arizona, where the Speckled's range reaches the Black-tailed's. A: Clean, jagged blotches holding pale patches in the Western Black-tailed Rattlesnake; bands made of fine speckles, coloured like the local rock in the Southwestern Speckled Rattlesnake. B: Black in the Western Black-tailed Rattlesnake; banded, with dark grey or black rings at the tip in the Southwestern Speckled Rattlesnake. Venomous: leave rattlesnakes alone and give them room.

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Western Black-tailed Rattlesnake

Crotalus molossus

Southwestern Speckled Rattlesnake

Crotalus pyrrhus
Western Black-tailed Rattlesnake vs. Southwestern Speckled Rattlesnake: comparison sheet with the differences marked

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

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