Know the dangerous ones
Venomous snakes in Los Alamos County, New Mexico
2 venomous snake species have verified records in Los Alamos County. Learn to recognize each one, and know what to do if you are bitten.
Field entries
Crotalus viridis Prairie RattlesnakeVenomousCrotalus viridis
How to identify
Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Occasionally seenFull profile →
Crotalus atrox Western Diamond-backed RattlesnakeVenomousCrotalus atrox
How to identify
Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Occasionally seenFull profile →
Looking for all snakes here, not just the venomous ones? See all snakes in Los Alamos County.