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Eastern Black-tailed Rattlesnake vs. Prairie Rattlesnake

Both are big rattlesnakes of New Mexico's mountains and grassland (records share 27 one-degree squares). A: Solid black in the Eastern Black-tailed Rattlesnake; ringed brown and pale in the Prairie Rattlesnake. B: A dark snout, no bold pale stripes on the face in the Eastern Black-tailed Rattlesnake; two pale stripes on each side of the face in the Prairie Rattlesnake.

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Eastern Black-tailed Rattlesnake

Crotalus ornatus

Prairie Rattlesnake

Crotalus viridis
Eastern Black-tailed Rattlesnake vs. Prairie 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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