Confusing Species
The Night Snake is similar to other blotched snakes of British Columbia. The Western Terrestrial Garter Snake has a yellow or brown stripe down the length of the back. The Gopher Snake grows to a much larger size. Small individuals can be confused with the Night Snake, but the Gopher Snake has a round pupil. The Western Rattlesnake has the same basic pattern of the Night Snake, as well as the vertical pupil. It can be distinguished from the Night Snake by the presence of the rattle, and the characteristic triangular head.

Distribution
The Night Snake appears to be limited to only the southern portions of the Okanagan Valley, although it was only first discovered in Canada in 1980. It may also be found farther north in the Okanagan in similar areas. The Canadian populations may be connected with populations in Washington state. The majority of the range is in the southwestern US and south into Mexico and central America.

Habitat
The Night Snake is mainly limited to hot, dry areas, with near desert conditions. It is found in both rocky and sandy areas. The Night Snake is frequently found under rocks or boards.

Reproduction
Breeding appears to occur in the spring. Females lay 4-6 eggs in late spring to early summer. The eggs hatch in approximately two months. Hatchlings vary greatly in size apparently ranging from 13-19 cm in total length.

Natural history
Night Snakes are mainly nocturnal and therefore rarely encountered. Most of the day is spent under cover. The Night Snake has enlarged grooved teeth at the back of the upper jaw for holding prey such as frogs. The snake's saliva is mildly toxic and immobilizes the prey. Night Snakes will even consume juvenile Western Rattlesnakes.

Conservation Concerns
The Night Snake is limited to only a small area in southern BC. Virtually nothing is known about the ecology of the species this far north. To date only a few Night Snakes have even been seen in BC.