Snakes in Harrison County

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ Venomous

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

• 
  Eastern Copperhead

  Agkistrodon contortrix

  ▲ 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.

• 
  Texas Coralsnake

  Micrurus tener

  ▲ Venomous

  Rings of red, yellow, and black where red touches yellow; small rounded head and round pupils.

Every snake recorded in Harrison County

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Banded Watersnake

Nerodia fasciata

Harmless

Speckled Kingsnake

Lampropeltis holbrooki

Harmless

Western Ratsnake

Pantherophis obsoletus

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Western Ribbon Snake

Thamnophis proximus

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

North American Racer

Coluber constrictor

Harmless

Diamondback Watersnake

Nerodia rhombifer

Harmless

Western Milksnake

Lampropeltis gentilis

Harmless

Mississippi Green Watersnake

Nerodia cyclopion

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Mudsnake

Farancia abacura

Harmless

Prairie Kingsnake

Lampropeltis calligaster

Harmless

Rough Earthsnake

Virginia striatula

Harmless

Eastern Hognose Snake

Heterodon platirhinos

Harmless

Red-bellied Snake

Storeria occipitomaculata

Harmless

Glossy Swampsnake

Liodytes rigida

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Common Coachwhip

Masticophis flagellum

Harmless

Timber Rattlesnake

Crotalus horridus

▲ Venomous

Texas Coralsnake

Micrurus tener

▲ Venomous

Flat-headed Snake

Tantilla gracilis

Harmless

Eastern Milksnake

Lampropeltis triangulum

Harmless

Smooth Earthsnake

Virginia valeriae

Harmless

Western Worm Snake

Carphophis vermis

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Harrison County: FAQ

Are there venomous snakes in Harrison County, Texas?

Yes. 4 venomous snake species have verified records in Harrison County, Texas, including Northern Cottonmouth, Eastern Copperhead, Timber Rattlesnake, Texas Coralsnake. Most snakes in Harrison County, Texas, however, are harmless.

How many snake species live in Harrison County, Texas?

20+ snake species have verified records in Harrison County, Texas, of which 4 are venomous.

What is the most commonly seen snake in Harrison County, Texas?

The Northern Cottonmouth is the most frequently reported snake in Harrison County, Texas, based on verified wildlife observations.

What should I do if I see a venomous snake in Harrison County, Texas?

Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.

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