• A bull elk bugles in Yellowstone National Park

    Yellowstone

    National Park ID,MT,WY

Mammals

Bison on the northern range.
NPS/Jones
 

Yellowstone is home to the largest concentration of mammals in the lower 48 states. In addition to having a diversity of small animals, Yellowstone is notable for its predator–prey complex of large mammals, including eight ungulate species (bighorn sheep, bison, elk, moose, mountain goats, mule deer, pronghorn, and white-tailed deer) and seven predators (black bears, Canada lynx, coyotes, grizzly bears, mountain lions, wolverines, and wolves). The National Park Service’s goal is to maintain the ecological processes that sustain these mammals and their habitats while monitoring the changes taking place in their populations. Seasonal or migratory movements take many species across the park boundary where they are subject to different management policies and uses of land by humans.

 

Quick Facts about Mammals in Yellowstone

  • 67 different mammals live here, including many small mammals.
  • As of 2011, 593 grizzly bears live in the Greater Yellowstone Ecosystem.
  • Black bears are common.
  • Gray wolves were restored in 1995. As of December 2012, 79 lived in the park.
  • Wolverine and lynx, which require large expanses of undisturbed habitat, live here.
  • Seven native ungulate species—elk, mule deer, bison, moose, bighorn sheep, pronghorn, and white-tailed deer—live here.
  • Nonnative mountain goats have colonized northern portions of the park.
 

Additional Resources

References
Mammal Checklist

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.