California
Snakes in Yolo County
14 species have been documented here, 2 of them venomous.
Venomous snakes in Yolo 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 Yolo County
Gopher Snake
Pituophis catenifer
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
California King Snake
Lampropeltis californiae
Harmless
Western Rattlesnake
Crotalus oreganus
Venomous
North American Racer
Coluber constrictor
Harmless
Common Sharp-tailed Snake
Contia tenuis
Harmless
Giant Garter Snake
Thamnophis gigas
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Striped Racer
Masticophis lateralis
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Aquatic Garter Snake
Thamnophis atratus
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Boa Constrictor
Boa constrictor
Harmless
Coast Night Snake
Hypsiglena ochrorhynchus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Yolo County: FAQ
- Are there venomous snakes in Yolo County, California?
- Yes. 2 venomous snake species have verified records in Yolo County, California, including Western Rattlesnake, Prairie Rattlesnake. Most snakes in Yolo County, California, however, are harmless.
- How many snake species live in Yolo County, California?
- 10+ snake species have verified records in Yolo County, California, of which 2 are venomous.
- What is the most commonly seen snake in Yolo County, California?
- The Gopher Snake is the most frequently reported snake in Yolo County, California, based on verified wildlife observations.
- What should I do if I see a venomous snake in Yolo 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.