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Western Glossy Snake vs. Sidewinder

Both are pale, blotched snakes of desert sand at night; their records overlap widely. A: Small and narrow, hardly wider than the neck; no pit in the Western Glossy Snake; broad and triangular, much wider than the thin neck; a pit between the eye and nostril in the Sidewinder. B: No horn in the Western Glossy Snake; a raised, pointed horn-like scale in the Sidewinder. The glossy snake's tail is thin and pointed, with no rattle; its scales are smooth and glossy. The Sidewinder is venomous: leave it alone.

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Western Glossy Snake

Arizona occidentalis

Sidewinder

Crotalus cerastes
Western Glossy Snake vs. Sidewinder: comparison sheet with the differences marked

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

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