Snakes in Plaquemines County

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ Venomous

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

• 
  Pygmy Rattlesnake

  Sistrurus miliarius

  ▲ Venomous

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

• 
  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.

Every snake recorded in Plaquemines County

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Western Ribbon Snake

Thamnophis proximus

Harmless

Banded Watersnake

Nerodia fasciata

Harmless

Mississippi Green Watersnake

Nerodia cyclopion

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

Western Ratsnake

Pantherophis obsoletus

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Common Garter Snake

Thamnophis sirtalis

Harmless

North American Racer

Coluber constrictor

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Pygmy Rattlesnake

Sistrurus miliarius

▲ Venomous

Gray Ratsnake

Pantherophis spiloides

Harmless

Speckled Kingsnake

Lampropeltis holbrooki

Harmless

Mudsnake

Farancia abacura

Harmless

Saltmarsh Snake

Nerodia clarkii

Harmless

Glossy Swampsnake

Liodytes rigida

Harmless

Eastern Milksnake

Lampropeltis triangulum

Harmless

Timber Rattlesnake

Crotalus horridus

▲ Venomous

Western Milksnake

Lampropeltis gentilis

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Plaquemines County: FAQ

Are there venomous snakes in Plaquemines County, Louisiana?

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

How many snake species live in Plaquemines County, Louisiana?

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

What is the most commonly seen snake in Plaquemines County, Louisiana?

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

What should I do if I see a venomous snake in Plaquemines County, Louisiana?

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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