California records
Western Rattlesnake in California
VenomousCrotalus oreganus
Yes. The Western Rattlesnake has been recorded in 57 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 Western Rattlesnake records
57 listed- San Diego
- Los Angeles
- Santa Clara
- Orange
- Ventura
- San Luis Obispo
- Contra Costa
- Sonoma
- Riverside
- San Bernardino
- Alameda
- Kern
- Monterey
- Santa Barbara
- San Mateo
- Marin
- Fresno
- Tulare
- San Benito
- San Joaquin
- Sacramento
- Mariposa
- Lake
- El Dorado
- Santa Cruz
- Butte
- Napa
- Tuolumne
- Mendocino
- Madera
- Siskiyou
- Placer
- Trinity
- Shasta
- Nevada
- Humboldt
- Mono
- Colusa
- Yolo
- Stanislaus
- Tehama
- Calaveras
- Lassen
- Solano
- Yuba
- Plumas
- Merced
- Del Norte
- Sierra
- Sutter
- Glenn
- Amador
- Kings
- Modoc
- Alpine
- Inyo
- Imperial
See the full Western Rattlesnake profile or all snakes in California.