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Flat-headed Snake vs. Smooth Earthsnake

Both are tiny plain brown snakes found under flat rocks on the Mississippi bluffs of southwest Illinois. The Flat-headed Snake is tan or reddish-brown with smooth, glossy scales, a flattened head slightly darker than the body, and a salmon-pink belly down the middle; the Smooth Earthsnake is grey-brown with faintly keeled dull scales, a pointed snout, a head no darker than the body, tiny black dots on the back, and a plain white or cream belly.

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Flat-headed Snake

Tantilla gracilis

Smooth Earthsnake

Virginia valeriae
Flat-headed Snake vs. Smooth Earthsnake: comparison sheet with the differences marked

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

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