California records
Prairie Rattlesnake in California
VenomousCrotalus viridis

Yes. The Prairie Rattlesnake has been recorded in 53 California counties. It is venomous. Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
If you are bitten
Rattlesnake bites are medically serious. Expect intense pain, rapid swelling, and bruising. Stay calm, keep the bitten limb still and roughly level with the heart, remove rings and tight clothing, and get to an emergency room immediately. Do NOT apply a tourniquet, cut the wound, apply ice, or try to suck out venom. Call Poison Control at 1-800-222-1222 or 911 in the US, or your local emergency number. (Source: CDC.)
California counties with Prairie Rattlesnake records
53 listed- Los Angeles
- Santa Barbara
- San Joaquin
- Alameda
- Kern
- San Bernardino
- Madera
- San Diego
- Fresno
- Riverside
- Tulare
- Lake
- Ventura
- Contra Costa
- Santa Clara
- San Luis Obispo
- Mendocino
- Lassen
- Stanislaus
- Plumas
- Calaveras
- Shasta
- Monterey
- Sonoma
- San Benito
- Orange
- Siskiyou
- Trinity
- Yolo
- Tuolumne
- Mariposa
- Butte
- Marin
- San Mateo
- San Francisco
- Napa
- Merced
- Imperial
- Santa Cruz
- Placer
- Mono
- Tehama
- Modoc
- Kings
- Solano
- Humboldt
- Glenn
- Del Norte
- Colusa
- Sutter
- Alpine
- Nevada
- Inyo
See the full Prairie Rattlesnake profile or all snakes in California.