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Snakes in Colorado
Colorado is home to 30 species of snake including 3 venomous. Snakes from the colubrid, and the viperidae, and the leptotyphlopidae (Texas Blind Snake) families are represented in the state’s native population.
| Common Name | Scientific Name | F/S | S/S |
|---|---|---|---|
| Blackneck Garter Snake | Thamnophis cyrtopsis | None | None |
| Brown Snake | Storeria dekayi | None | None |
| Coachwhip | Masticophis flagellum | None | None |
| Common Garter Snake | Thamnophis sirtalis | None | State Concern |
| Common Kingsnake | Lampropeltis getula | None | State Concern |
| Eastern Hognose | Heterodon platirhinos | None | None |
| Glossy Snake | Arizona elegans | Concern | None |
| Gopher Snake | Pituophis catenifer | None | None |
| Great Plains Rat Snake | Elaphe guttata or Elaphe emoryi | None | None |
| Ground Snake | Sonora semiannulata | Concern | None |
| Lined Snake | Tropidoclonion lineatum | None | None |
| Massasauga (V) | Sistrurus catenatus | None | State Concern |
| Midget Faded Rattlesnake (V) | Crotalus viridis concolor | None | State Concern |
| Milk Snake | Lampropeltis triangulum | None | None |
| Night Snake | Hypsiglena torquata | None | None |
| Northern Water Snake | Nerodia sipedon | Not Listed | None |
| Plains Black-headed Snake | Tantilla nigriceps | None | None |
| Plains Garter Snake | Thamnophis radix | None | None |
| Racer | Coluber constrictor | None | None |
| Ringneck Snake | Diadophis punctatus | Concern | None |
| Rubber Boa | Charina bottae | None | None |
| Smooth Green Snake | Liochlorophis vernalis | None | None |
| Southwestern Black-headed Snake | Tantilla hobartsmith | None | None |
| Striped Whipsnake | Masticophis taeniatus | None | None |
| Texas Blind Snake | Leptotyphlops dulcis | None | State Concern |
| Western Hognose | Heterodon nasicus | None | None |
| Western Longnose Snake | Rhinocheilus lecontei | Concern | None |
| Western Rattlesnake (V) | Crotalus viridis | None | None |
| Western Ribbon Snake | Thamnophis proximus | None | None |
| Western Terrestrial Garter Snake | Thamnophis elegans | None | None |
