Are there rattlesnakes in Louisiana?

Short answer
Yes3 species

Eastern diamondback rattlesnake: Yes. The eastern diamondback rattlesnake lives in Louisiana. Open records from the state are scarce, but it is part of the documented range.

Western diamondback rattlesnake: Only as rare records. GBIF holds 2 open records of the western diamondback rattlesnake from Louisiana, but there is no known population.

Timber rattlesnake: Yes. The timber rattlesnake lives in Louisiana. Open records come from 25 counties.

Black-tailed rattlesnake: Only as rare records. GBIF holds 1 open record of the black-tailed rattlesnake from Louisiana, but there is no known population.

Pygmy rattlesnake: Yes. The pygmy rattlesnake lives in Louisiana. Open records come from 22 counties.

Western massasauga: Only as rare records. GBIF holds 1 open record of the western massasauga from Louisiana, but there is no known population.

Eastern diamondback rattlesnake
Photo: Bladerunner8u, CC BY-SA 3.0, via Wikimedia Commons

Where in Louisiana

Tangipahoa: Pygmy rattlesnakeBienville: Pygmy rattlesnake, Timber rattlesnakeEvangeline: Timber rattlesnakePointe Coupee: Timber rattlesnakeSt. Mary: Pygmy rattlesnakeSt. Charles: Pygmy rattlesnakeIberia: Pygmy rattlesnake, Timber rattlesnakeEast Baton Rouge: Pygmy rattlesnake, Timber rattlesnakeGrant: Pygmy rattlesnakeLincoln: Timber rattlesnakeUnion: Pygmy rattlesnake, Timber rattlesnakeVernon: Timber rattlesnakeLafayette: Pygmy rattlesnakeSt. Bernard: Pygmy rattlesnake, Timber rattlesnakeEast Feliciana: Timber rattlesnakeWest Feliciana: Timber rattlesnakeConcordia: Timber rattlesnakeJackson: Pygmy rattlesnake, Timber rattlesnakeJefferson: Pygmy rattlesnakeMorehouse: Pygmy rattlesnake, Timber rattlesnakeOrleans: Pygmy rattlesnake, Timber rattlesnakeOuachita: Timber rattlesnakeWashington: Pygmy rattlesnakeLafourche: Pygmy rattlesnakeTerrebonne: Timber rattlesnakeRapides: Eastern massasauga, Pygmy rattlesnake, Timber rattlesnakeNatchitoches: Pygmy rattlesnake, Timber rattlesnakeFranklin: Timber rattlesnakeSt. Landry: Pygmy rattlesnakeSt. John the Baptist: Timber rattlesnakeWest Baton Rouge: Timber rattlesnakeIberville: Timber rattlesnakeAvoyelles: Timber rattlesnakeSt. Martin: Pygmy rattlesnakePlaquemines: Pygmy rattlesnake, Timber rattlesnakeSt. Tammany: Pygmy rattlesnake
Open GBIF records by county. Most come from Saint Bernard Parish, Plaquemines Parish, Jackson Parish, Iberia Parish, Saint Tammany Parish.

Rattlesnakes across the US

Alabama: lives hereAlaska: not hereArizona: lives hereArkansas: lives hereCalifornia: lives hereColorado: lives hereConnecticut: lives hereDelaware: goneFlorida: lives hereGeorgia: lives hereHawaii: not hereIdaho: lives hereIllinois: lives hereIndiana: lives hereIowa: lives hereKansas: lives hereKentucky: lives hereLouisiana: lives hereMaine: goneMaryland: lives hereMassachusetts: lives hereMichigan: lives hereMinnesota: lives hereMississippi: lives hereMissouri: lives hereMontana: lives hereNebraska: lives hereNevada: lives hereNew Hampshire: lives hereNew Jersey: lives hereNew Mexico: lives hereNew York: lives hereNorth Carolina: lives hereNorth Dakota: lives hereOhio: lives hereOklahoma: lives hereOregon: lives herePennsylvania: lives hereRhode Island: goneSouth Carolina: lives hereSouth Dakota: lives hereTennessee: lives hereTexas: lives hereUtah: lives hereVermont: lives hereVirginia: lives hereWashington: lives hereWest Virginia: lives hereWisconsin: lives hereWyoming: lives here
Louisiana is outlined. Tap another state to see its answer.

How to recognize them

Eastern diamondback rattlesnake Crotalus adamanteus

Dangerous. A large snake with a big venom yield. A bite is a medical emergency.

Timber rattlesnake Crotalus horridus

Dangerous. Usually calm and slow to strike, but a bite is a medical emergency.

Pygmy rattlesnake Sistrurus miliarius

Medically significant. Small venom yield, and deaths are extremely rare, but bites are painful and need medical care.

Often mistaken for rattlesnakes

Questions

Are there rattlesnakes in Louisiana?

Yes. 3 species live in Louisiana: Eastern diamondback rattlesnake, Timber rattlesnake and Pygmy rattlesnake.

What do rattlesnakes look like?

Dark diamonds with pale yellow edges down the back. Two pale diagonal stripes on each side of the face. Thick body and a rattle on the tail.

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