The night snake (Hypsiglena torquata) is a species of rear-fanged colubrid. It is found from British Columbia, Canada through the western United States to Mexico. Total length is 12–26 in (30–66 cm). It is pale gray, light brown, or beige in color, with dark grey or brown blotches on the back and sides. The night snake's head is rather flat and triangular-shaped and usually has a pair of dark brown blotches on the neck. It also has a black or dark brown bar behind the eyes that contrast against the white or pale gray upper labial scales, and the pupil of the eye is vertical. The belly is white or yellowish. Females are usually longer and heavier than males. Although the night snake poses no threat to humans, it is slightly venomous and uses this venom to subdue its prey. (Source: Wikipedia.org, CC BY-SA)