California
Snakes in Merced County
12 species have been documented here, 2 of them venomous.
Venomous snakes in Merced County
Full guide & what to do if bitten →
Western RattlesnakeCrotalus oreganusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Merced County

Gopher Snake
Pituophis catenifer
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Western Rattlesnake
Crotalus oreganus
Venomous

Giant Garter Snake
Thamnophis gigas
Harmless

California King Snake
Lampropeltis californiae
Harmless

Eastern Kingsnake
Lampropeltis getula
Harmless

Aquatic Garter Snake
Thamnophis atratus
Harmless

North American Racer
Coluber constrictor
Harmless

Prairie Rattlesnake
Crotalus viridis
Venomous

Ring-necked Snake
Diadophis punctatus
Harmless

Common Sharp-tailed Snake
Contia tenuis
Harmless

Sierra Garter Snake
Thamnophis couchii
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Merced County: FAQ
- Are there venomous snakes in Merced County, California?
- Yes. 2 venomous snake species have verified records in Merced County, California, including Western Rattlesnake, Prairie Rattlesnake. Most snakes in Merced County, California, however, are harmless.
- How many snake species live in Merced County, California?
- 10+ snake species have verified records in Merced County, California, of which 2 are venomous.
- What is the most commonly seen snake in Merced County, California?
- The Gopher Snake is the most frequently reported snake in Merced County, California, based on verified wildlife observations.
- What should I do if I see a venomous snake in Merced County, California?
- 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.