Snakes in Cannon County

• 
  Timber Rattlesnake

  Crotalus horridus

  ▲ Venomous

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

• 
  Eastern Copperhead

  Agkistrodon contortrix

  ▲ Venomous

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

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ Venomous

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

Every snake recorded in Cannon County

North American Racer

Coluber constrictor

Harmless

Gray Ratsnake

Pantherophis spiloides

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Black Kingsnake

Lampropeltis nigra

Harmless

Common Watersnake

Nerodia sipedon

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

Timber Rattlesnake

Crotalus horridus

▲ Venomous

Red Cornsnake

Pantherophis guttatus

Harmless

Common Garter Snake

Thamnophis sirtalis

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Eastern Milksnake

Lampropeltis triangulum

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Red-bellied Snake

Storeria occipitomaculata

Harmless

Common Wormsnake

Carphophis amoenus

Harmless

Smooth Earthsnake

Virginia valeriae

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Nearby counties