NatureMapping Animal Facts

Night Snake

distribution map

Night Snake (Hypsiglena torquata)
Serpiente De La Noche - en Español
Species Code: HYTO

Description: Night Snakes are pale grey, beige or light brown reptiles. They have brown paired blotches on the dorsum and usually three large black blotches on the neck. The venter is whitish or yellow. The head is flat, with vertical pupils, and a brown bar behind the eyes. The scales are smooth, often with irridescence.

Night Snake

Range/ Habitat: Night snakes are found in dry hot areas of the western United States and British Columbia, Canada.

Habitats include cliffs, talus slopes, grasslands, shrub savannas, shrublands, rivers and riparian wetlands.

Click the map for information about the habitat and range of the Night Snake in Washington.

Diet: The saliva of the night snake is mildly venomous, which helps them capture small prey, especially reptiles and amphibians.  Their usual fare consists of lizards, lizard eggs, small snakes (even neonate Rattlesnakes), frogs and toads.

Night Snake by Chris Brown, USGS

Reproduction: The night snake lay eggs in June and July. The eggs of this species are laid in crevices in rocky areas. Females deposit 3 to 9 (usually 4) eggs, which hatch in about two months. Abandoned mammal burrows are also occasionally be used as nest sites for the night snake.

Little is known about their breeding habits, except that they are an oviparous species (their young develop in eggs outside of their mother’s body).

Behavior: When disturbed, the night snake may flatten its head, coil tightly, and vibrate the tail - appearing as a viper (see photo). However, it is a gentle species that is easily handled. They are considered to be rear-fanged venomous, but not dangerous to humans.

It's a small, secretive snake most often found beneath rocks on rugged hillsides between May and September. As their common name implies, they are primarily nocturnal (active at night).

Did you know?

  • The night snake looks similar to a rattlesnake, but they are harmless to humans
  • When disturbed, the night snake may coil tightly and vibrate the tail - appearing as a viper
  • They are mainly active at night
  • A group of snakes is called a pit, nest, or bed.

Night Snake by Chris Brown, USGS
The Night Snake blends in with the background.
(photo by Chris Brown)

More Information:
Snakes of Coastal California - Western Ecological Research Center

Night Snake - Reptiles of British Columbia

Animal silhouettes available to purchase »

Photo Credit: TM, Chris Brown (USGS)

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