Colorado's Snakes Click on the green column headers to sort the table.

Family Species Common Name Colubridae Arizona elegans Glossy snake Colubridae Coluber constrictor Racer Colubridae Diadophis punctatus Ringneck snake Colubridae Elaphe guttata Corn snake or Rat snake Colubridae Heterodon nasicus Western hognose snake Colubridae Heterodon platirhinos Eastern hognose snake Colubridae Hypsiglena torquata Night snake Colubridae Lampropeltis getula Common kingsnake Colubridae Lampropeltis triangulum Milk snake Colubridae Masticophis flagellum Coachwhip Colubridae Masticophis taeniatus Striped whipsnake Colubridae Nerodia sipedon Northern water snake Colubridae Opheodrys vernalis Smooth green snake Colubridae Pituophis catenifer Bullsnake or Gopher snake Colubridae Rhinocheilus lecontei Longnose snake Colubridae Sonora semiannulata Ground snake Colubridae Tantilla hobartsmithi Southwestern blackhead snake Colubridae Tantilla nigriceps Plains blackhead snake Colubridae Thamnophis cyrtopsis Blackneck garter snake Colubridae Thamnophis elegans Western terrestrial garter snake Colubridae Thamnophis proximus Redstripe ribbon snake Colubridae Thamnophis radix Plains garter snake Colubridae Thamnophis sirtalis Common garter snake Colubridae Tropidoclonion lineatum Lined snake Leptotyphlopidae Leptotyphlops dulcis Texas blind snake Viperidae Crotalus oreganus concolor Midget faded rattlesnake Viperidae Crotalus viridis Prairie rattlesnake Viperidae Sistrurus catenatus Massasauga