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Chihuahuan Hook-nosed Snake vs. Ground Snake

Both are small banded snakes of the desert grassland of southeastern Arizona, out on rainy nights. A: Snout scale turned up at the front, flat or hollow on top in the Chihuahuan Hook-nosed Snake; normal rounded snout in the Ground Snake. B: More than 25 thin zigzag brown bars on grey or tan in the Chihuahuan Hook-nosed Snake; plain, striped, or with fewer, wider dark bands (often red between) in the Ground Snake.

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Chihuahuan Hook-nosed Snake

Gyalopion canum

Ground Snake

Sonora semiannulata
Chihuahuan Hook-nosed Snake vs. Ground Snake: comparison sheet with the differences marked

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

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