Western Diamond-backed Rattlesnake vs. Sidewinder
Both live on the desert flats of eastern Imperial and Riverside counties; their records overlap widely. A: No horn: a flat scale over the eye in the Western Diamond-backed Rattlesnake; a raised, pointed horn over each eye in the Sidewinder. B: Big dark diamonds in the Western Diamond-backed Rattlesnake; small pale blotches in rows in the Sidewinder. The Diamond-backed is much larger (to 7 ft vs 2.5 ft); the Sidewinder moves sideways on loose sand. Both very venomous.
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