Narrow-headed Garter Snake

Thamnophis rufipunctatus (Cope, 1875)

Spanish Name(s)	Culebra de Agua de Cabeza-angosta
U.S. Range	Arizona and New Mexico
Mexican Range	Chihuahua, Coahuila, Durango and Sonora
Legal Status	Endangered in New Mexico. Threatened in Arizona. Consult provincial or state pages for legal restrictions on keeping this species in captivity.
Diet	Aquatic prey, mostly fish. Reports of tadpoles and ambystomatid salamander larvae.
Max. Recorded Length	95.3 cm
Pet Trade Availability	Not available or unknown availability.
Captivity Rating	No data available.

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Southern Durango Spotted Garter Snake Thamnophis rufipunctatus nigronuchalis Thompson, 1957: Now considered a separate species, T. nigronuchalis.
Chiahuahuan Narrow-headed Garter Snake Thamnophis rufipunctatus unilabialis Tanner, 1985: Rossman et al. consider the diagnostic differences too insignificant to recognize the Mexican populations as a subspecies.