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| Subspecies: | Unknown |
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| Est. World Population: | |
| CITES Status: | Not Listed |
| IUCN Status: | Least Concern |
| U.S. ESA Status: | Not Listed |
| Body Length: | |
| Tail Length: | |
| Shoulder Height: | |
| Weight: | |
| Top Speed: | |
| Jumping Ability: | (Horizontal) |
| Life Span: | in the Wild |
| Life Span: | in Captivity |
| Sexual Maturity: | (Females) |
| Sexual Maturity: | (Males) |
| Litter Size: | |
| Gestation Period: | |
Habitat:
The species' typical habitats include deserts, dry prairies, arid river valleys, thornbrush, and shrubland; sometimes oak-hackberry woodland (Werler and Dixon 2000, Stebbins 2003). This snake retreats underground or under rocks by day. Eggs are laid underground or under rocks.
Range:
The range of this species extends from northern California, southern Idaho, Utah, southeastern Colorado, and southwestern Kansas in the United States, south to central Baja California, Jalisco, San Luis Potosi, and Tamaulipas, in Mexico, at elevations ranging from below sea level in desert sinks to around 1,900 m asl (6,233 feet) (Medica 1975, Stebbins 2003).
Conservation:
Many occurrences of this species are in protected areas.