Twin-spotted Rattlesnake vs. Western Black-tailed Rattlesnake
They meet in the high canyons of the southeastern mountains. A: Two rows of small dark spots on grey, joining into one row near the tail in the Twin-spotted Rattlesnake; big jagged dark blotches holding pale patches in the Western Black-tailed Rattlesnake. B: Banded, the first rattle segment orange in the Twin-spotted Rattlesnake; solid black in the Western Black-tailed Rattlesnake. C: Small: to 26 in (66 cm) in the Twin-spotted Rattlesnake; big: to 48 in (122 cm) in the Western Black-tailed Rattlesnake. Both Ridge-nosed and Twin-spotted Rattlesnakes are protected in Arizona. Venomous: leave rattlesnakes alone and give them room.
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