Wandering Garter Snake

A white and gray striped snake with black dots
A wandering garter snake near Mammoth Hot Springs

NPS / Jeff Arnold

 

Scientific Name

Thamnophis elegans vagrans

Identification

  • Most common reptile in the park.
  • 6 to 30 inches long.
  • Brown, brownish green, or gray with three light stripes—one running the length of the back and a stripe on each side.

Habitat

  • Usually found near water in all areas of the park.
  • Eats small rodents, fish, frogs, tadpoles, salamanders, earthworms, slugs, snails, and leeches.

Behavior

  • May discharge musk from glands at the base of the tale when threatened.
  • Gives birth to as many as 20 live young in late summer or fall.
 

Contact the Park

Mailing Address:

P.O. Box 168
Yellowstone National Park, WY 82190-0168

Phone:

(307) 344-7381
Recorded information. For road and weather information, please dial 307-344-2117.

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