Rock Rattlesnake vs. Arizona Black Rattlesnake

They meet in the Pinaleño and other mountains of southeastern Arizona, on rocky slopes in oak and pine. A: Widely spaced, jagged black crossbands on light blue-grey to green-grey in the Rock Rattlesnake; black blotches on dark grey-brown to black, edged by thin pale lines in the Arizona Black Rattlesnake. B: Small: to 33 in in the Rock Rattlesnake; larger: to 42 in in the Arizona Black Rattlesnake. C: Salmon or peach (yellow in the young) in the Rock Rattlesnake; dark in the Arizona Black Rattlesnake. Venomous: leave rattlesnakes alone and give them room.

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

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