• An aerial view of Old Faithful erupting taken from Observation Point with the Old Faithful Inn to the side.

    Yellowstone

    National Park ID,MT,WY

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?

Yellowstone Wolf.

There were no wolves in Yellowstone in 1994. The wolves that were reintroduced in 1995 and 1996 thrived and there are now over 300 of their descendents living in the Greater Yellowstone Area.