Snakes in Jefferson County

• 
  Western Diamond-backed Rattlesnake

  Crotalus atrox

  ▲ Venomous

  Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ Venomous

  Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.

• 
  Timber Rattlesnake

  Crotalus horridus

  ▲ Venomous

  Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.

• 
  Broad-banded Copperhead

  Agkistrodon laticinctus

  ▲ Venomous

  Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.

• 
  Western Massasauga

  Sistrurus tergeminus

  ▲ Venomous

  Stout, dark-blotched body, nine large scales on the crown, and a small rattle.

Every snake recorded in Jefferson County

Western Ratsnake

Pantherophis obsoletus

Harmless

Western Ribbon Snake

Thamnophis proximus

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

Western Diamond-backed Rattlesnake

Crotalus atrox

▲ Venomous

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Common Coachwhip

Masticophis flagellum

Harmless

Diamondback Watersnake

Nerodia rhombifer

Harmless

Ground Snake

Sonora semiannulata

Harmless

No photo

Mexican Whip Snake

Masticophis lineatus

Harmless

North American Racer

Coluber constrictor

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Timber Rattlesnake

Crotalus horridus

▲ Venomous

Gopher Snake

Pituophis catenifer

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Speckled Kingsnake

Lampropeltis holbrooki

Harmless

Broad-banded Copperhead

Agkistrodon laticinctus

▲ Venomous

Eastern Kingsnake

Lampropeltis getula

Harmless

Western Massasauga

Sistrurus tergeminus

▲ Venomous

Plains Hognose Snake

Heterodon nasicus

Harmless

Great Plains Ground Snake

Sonora episcopa

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Nearby counties