Narrowhead Garter Snake vs. Black-necked Garter Snake

Both hunt in the rocky streams along and below the Mogollon Rim. A: No stripes: paired dark (sometimes orange) spots down the back in the Narrowhead Garter Snake; a bright stripe down the back and one along each side in the Black-necked Garter Snake. B: No black blotches on the neck in the Narrowhead Garter Snake; two big black blotches on the neck in the Black-necked Garter Snake. C: Long and narrow, with the eyes set high in the Narrowhead Garter Snake; normal snout, plain grey head in the Black-necked Garter Snake.

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

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