Chihuahuan Mountain Kingsnake vs. Sonoran Coralsnake

Both are red, black and pale ringed snakes of the rocky slopes and canyons of Arizona; the coralsnake is venomous. A: Red touches black; each white ring is bordered by black in the Chihuahuan Mountain Kingsnake; red touches yellow or white; black and red rings separated by narrow pale rings in the Sonoran Coralsnake. B: White or cream in the Chihuahuan Mountain Kingsnake; black in the Sonoran Coralsnake. C: Bigger and thicker: to 43 in (109 cm) in the Chihuahuan Mountain Kingsnake; small and slim: to 24 in (61 cm) in the Sonoran Coralsnake. Red touching black is a harmless kingsnake; red touching yellow or white, with a black snout, is the venomous Sonoran Coralsnake. Never handle a coralsnake.

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

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