• A bull elk bugles in Yellowstone National Park

    Yellowstone

    National Park ID,MT,WY

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Prairie rattlesnake

A Prairie rattlesnake is coiled in green sagebrush with it's tongue out.
Prairie rattlesnake
NPS/Peaco
 

Scientific name: Crotalis viridis viridis

Identification

  • Can be more than 48 inches in length.
  • Greenish gray to olive green, greenish brown, light brown, or yellowish with dark brown splotches down its back that are bordered in white.

Habitat and Behavior

  • Only dangerously venomous snake in the park.
  • Lives in the lower Yellowstone River areas of the park, including Reese Creek, Stephens Creek, and Rattlesnake Butte, where the habitat is drier and warmer than elsewhere in the park.
  • Usually defensive rather than aggressive.
  • Only two snake bites are known during the history of the park.

Did You Know?

Upper Geyser Basin Hydrothermal Features on a Winter Day.

Yellowstone contains approximately one-half of the world’s hydrothermal features. There are over 10,000 hydrothermal features, including over 300 geysers, in the park.