Are there rattlesnakes in Arizona?

Short answer
Yes12 species

Western diamondback rattlesnake: Yes. The western diamondback rattlesnake lives in Arizona. Open records come from 13 counties.

Prairie rattlesnake: Yes. The prairie rattlesnake lives in Arizona. Open records come from 13 counties.

Western rattlesnake: Yes. The western rattlesnake lives in Arizona. Open records come from 12 counties.

Mojave rattlesnake: Yes. The Mojave rattlesnake lives in Arizona. Open records come from 13 counties.

Sidewinder: Yes. The sidewinder lives in Arizona. Open records come from 11 counties.

Speckled rattlesnake: Yes. The speckled rattlesnake lives in Arizona. Open records come from 8 counties.

Black-tailed rattlesnake: Yes. The black-tailed rattlesnake lives in Arizona. Open records come from 13 counties.

Rock rattlesnake: Yes. The rock rattlesnake lives in Arizona. Open records come from 3 counties.

Tiger rattlesnake: Yes. The tiger rattlesnake lives in Arizona. Open records come from 7 counties.

Twin-spotted rattlesnake: Yes. The twin-spotted rattlesnake lives in Arizona. Open records come from 5 counties.

Ridge-nosed rattlesnake: Yes. The ridge-nosed rattlesnake lives in Arizona. Open records come from 4 counties.

Western massasauga: Yes. The western massasauga lives in Arizona. Open records come from 1 county.

Western diamondback rattlesnake
Photo: Gary Stolz (original), Public domain, via Wikimedia Commons

Where in Arizona

Mohave: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Sidewinder, Speckled rattlesnake, Western diamondback rattlesnake, Western rattlesnakeSanta Cruz: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Ridge-nosed rattlesnake, Rock rattlesnake, Sidewinder, Tiger rattlesnake, Twin-spotted rattlesnake, Western diamondback rattlesnakeCoconino: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Sidewinder, Speckled rattlesnake, Western diamondback rattlesnake, Western rattlesnakeLa Paz: Mojave rattlesnake, Sidewinder, Speckled rattlesnake, Western diamondback rattlesnakeGila: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Sidewinder, Tiger rattlesnake, Western diamondback rattlesnake, Western rattlesnakePima: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Ridge-nosed rattlesnake, Rock rattlesnake, Sidewinder, Speckled rattlesnake, Tiger rattlesnake, Twin-spotted rattlesnake, Western diamondback rattlesnake, Western rattlesnakeGreenlee: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Western diamondback rattlesnake, Western rattlesnakePinal: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Sidewinder, Speckled rattlesnake, Tiger rattlesnake, Western diamondback rattlesnake, Western rattlesnakeNavajo: Black-tailed rattlesnake, Prairie rattlesnake, Western rattlesnakeYuma: Black-tailed rattlesnake, Mojave rattlesnake, Sidewinder, Speckled rattlesnake, Western diamondback rattlesnakeMaricopa: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Ridge-nosed rattlesnake, Sidewinder, Speckled rattlesnake, Tiger rattlesnake, Western diamondback rattlesnake, Western rattlesnakeGraham: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Twin-spotted rattlesnake, Western diamondback rattlesnake, Western rattlesnakeCochise: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Ridge-nosed rattlesnake, Rock rattlesnake, Sidewinder, Tiger rattlesnake, Twin-spotted rattlesnake, Western diamondback rattlesnake, Western massasauga, Western rattlesnakeApache: Prairie rattlesnake, Twin-spotted rattlesnake, Western rattlesnakeYavapai: Black-tailed rattlesnake, Mojave rattlesnake, Prairie rattlesnake, Sidewinder, Speckled rattlesnake, Tiger rattlesnake, Western diamondback rattlesnake, Western rattlesnake
Open GBIF records by county. Most come from Cochise County, Pima County, Maricopa County, Yavapai County, Pinal County.

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
Arizona is outlined. Tap another state to see its answer.

How to recognize them

Western diamondback rattlesnake Crotalus atrox

Dangerous. Responsible for many of the serious snakebites in the Southwest. A bite is a medical emergency.

Prairie rattlesnake Crotalus viridis

Dangerous. The only rattlesnake across most of the northern plains. A bite is a medical emergency.

Western rattlesnake Crotalus oreganus

Dangerous. The rattlesnake most people meet in California, Oregon, Washington and Idaho. A bite is a medical emergency.

Mojave rattlesnake Crotalus scutulatus

Dangerous. Venom in many populations carries a strong nerve toxin. A bite is a medical emergency even if it looks mild at first.

Often mistaken for rattlesnakes

Questions

Are there rattlesnakes in Arizona?

Yes. 12 species live in Arizona: Western diamondback rattlesnake, Prairie rattlesnake, Western rattlesnake, Mojave rattlesnake, Sidewinder, Speckled rattlesnake, Black-tailed rattlesnake, Rock rattlesnake, Tiger rattlesnake, Twin-spotted rattlesnake, Ridge-nosed rattlesnake and Western massasauga.

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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