Wildlife

Yellowstone National Park has abundant and diverse wildlife. There are 67 species of mammals including 7 species of native ungulates and 2 species of bears, nearly 300 species of birds, 16 species of fish, 5 species of amphibians, and 6 species of reptiles.

 
A wolf standing on a snowy bank near brown grass howls

Mammals

Home to the largest concentration of mammals in the lower 48 states.

A yellow-breasted bird with black markings calls out as it stands on a stick

Birds

About 150 species build their nests and fledge their young in Yellowstone.

An underwater view of a spotted fish with a red slash on its neck and side swims above pebbles

Fish and Aquatic Species

Native fish underpin natural food webs and have great local economic significance.

A frog with stretched chin in water

Amphibians

Amphibians are valuable indicators of stressors such as disease or climate change.

The head of a brown spotted snake among grass

Reptiles

There are six reptile species in Yellowstone.

 

Habitat preferences and seasonal cycles of movement determine, in a general sense, where a particular animal may be at a particular time. Early morning and evening hours are when animals tend to be feeding and are more easily seen. But remember that the numbers and variety of animals you see are largely a matter of luck and coincidence.

Wild animals, especially females with young, are unpredictable and dangerous. Keep a safe distance from all wildlife. Each year a number of park visitors are injured by wildlife when approaching too closely. Approaching on foot within 100 yards (91 m) of bears or wolves, or within 25 yards (23 m) of other wildlife is prohibited. Please use roadside pullouts when viewing wildlife. Use binoculars or telephoto lenses for safe viewing and to avoid disturbing wildlife.

By being sensitive to its needs, you will see more of an animal’s natural behavior and activity. If you cause an animal to move, you are too close. It is illegal to willfully remain near or approach wildlife, including birds, within any distance that disturbs or displaces the animal.

More Information

Contact the Park

Mailing Address:

P.O. Box 168
Yellowstone National Park, WY 82190-0168

Phone:

(307) 344-7381
Recorded information. For road and weather information, please dial 307-344-2117.

Contact Us