California
Snakes in Mono County
19 species have been documented here, 4 of them venomous.
Venomous snakes in Mono 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.
Panamint RattlesnakeCrotalus stephensiVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
SidewinderCrotalus cerastesVenomousHeavy 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 Mono County
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Northern Rubber Boa
Charina bottae
Harmless
Western Rattlesnake
Crotalus oreganus
Venomous
Striped Whipsnake
Masticophis taeniatus
Harmless
Panamint Rattlesnake
Crotalus stephensi
Venomous
Sidewinder
Crotalus cerastes
Venomous
Sierra Garter Snake
Thamnophis couchii
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
Long-nosed Snake
Rhinocheilus lecontei
Harmless
Western Patch-nosed Snake
Salvadora hexalepis
Harmless
Desert Nightsnake
Hypsiglena chlorophaea
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
North American Racer
Coluber constrictor
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Western Threadsnake
Rena humilis
Harmless
California King Snake
Lampropeltis californiae
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Mono County: FAQ
- Are there venomous snakes in Mono County, California?
- Yes. 4 venomous snake species have verified records in Mono County, California, including Western Rattlesnake, Panamint Rattlesnake, Sidewinder, Prairie Rattlesnake. Most snakes in Mono County, California, however, are harmless.
- How many snake species live in Mono County, California?
- 10+ snake species have verified records in Mono County, California, of which 4 are venomous.
- What is the most commonly seen snake in Mono County, California?
- The Western Terrestrial Garter Snake is the most frequently reported snake in Mono County, California, based on verified wildlife observations.
- What should I do if I see a venomous snake in Mono 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.