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The western terrestrial garter snake in a sentence

1. The western terrestrial garter snake (Thamnophis elegans) in California is largely aquatic and depends heavily on two species of frog that are decreasing in numbers, the Yosemite toad (Bufo canorus) and the mountain yellow-legged frog (Rana muscosa), putting the snake's future at risk.

2. Venomous snakes that also use constriction include the mussuranas (ophiophagous South American mildly venomous rear-fanged colubrids which use constriction to subdue snakes including pit vipers), the western terrestrial garter snake (North American colubrid which is an inefficient constrictor and, like most Thamnophis garter snakes, mildly venomous), some species of Boiga snakes (Asian and Australian rear-fanged colubrids) including the brown tree snake (Boiga irregularis), some species of Australian elapids (including some of the venomous Pseudonaja brown snakes and one Australian coral snake Simoselaps), and a few Australian colubrids.

3. Two color phases of the western terrestrial garter snake (Thamnophis elegans), one with a red background the other with a green background, are present on Brooks Island.

4. The San Francisco garter snake cohabits ecosystems that also host a subspecies of two other garter snake species: the coastal garter snake (Thamnophis elegans terrestris), a subspecies of the western terrestrial garter snake (T. elegans), and the Santa Cruz garter snake (Thamnophis atratus atratus) a subspecies of the aquatic garter snake (T. atratus).

5. It is itself preyed on by the western terrestrial garter snake (Thamnophis elegans).

6. The western terrestrial garter snake (Thamnophis elegans) is a western North American species of colubrid snake.

7. Like many species of North American garter snake, the western terrestrial garter snake possesses a mildly venomous saliva.

8. The western terrestrial garter snake does not lay eggs, but instead is ovoviviparous, which is characteristic of natricine snakes.

9. This makes the western terrestrial garter snake an excellent example of polyphagism.

10. The wandering garter snake (Thamnophis elegans vagrans, Salish: sč̓ewíle) is a subspecies of the western terrestrial garter snake, a species of colubrid snake residing only in southwestern Canada, and Western United States.

11. The wandering garter snake (Thamnophis elegans vagrans) is a subspecies of the western terrestrial garter snake, a species of colubrid snake residing only in southwestern Canada, and the western United States.

12. The wandering garter snake (Thamnophis elegans vagrans) is a subspecies of the western terrestrial garter snake, a species of colubrid snake residing only in Southwestern Canada, and Western United States.

13. Subsequently, some authors have noted similarities between northern populations of the Mexican wandering garter snake and the southern subspecies of the western terrestrial garter snake (Thamnophis elegans vagrans), leading them to reclassify the former as another subspecies of the western terrestrial garter snake under the name Thamnophis elegans errans.