Narrowhead Garter Snake vs. Mexican Garter Snake

Both are threatened garter snakes of the streams below the Mogollon Rim. A: No stripes: paired dark (sometimes orange) spots down the back in the Narrowhead Garter Snake; a crisp cream stripe down the middle of the back in the Mexican Garter Snake. B: Long and narrow, with the eyes set high in the Narrowhead Garter Snake; normal snout; dark bars on the lip seams in the Mexican Garter Snake.

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

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