• Sow grizzly with cub trailing her.

    Yellowstone

    National Park ID,MT,WY

Prairie rattlesnake

rattlesnake
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?