Colorado records
Plains Black-headed Snake in Colorado
HarmlessTantilla nigriceps

Yes. The Plains Black-headed Snake has been recorded in 10 Colorado counties. It is non-venomous (harmless). Tiny and slender, plain brown or tan, often with a darker head cap.
Colorado counties with Plains Black-headed Snake records
10 listedSee the full Plains Black-headed Snake profile or all snakes in Colorado.