• 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

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  • Construction Work To Result In Yellowstone Road Closures After Labor Day

    Two sections of Yellowstone’s Grand Loop Road will be closed due to construction after the Labor Day holiday weekend. Travel between some points will involve long detours and significantly longer than normal travel times. More »

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?

Bear Cubs

Even though the animals of Yellowstone seem tame they are still wild. Feeding the animals is not permitted in any way, and all visitors must keep 100 yards away from wolves and bears, and 25 yards from other animals.