Emergency Phone: Dial 911
Yellowstone is a wilderness filled with natural wonders that are also potential hazards. There is no guarantee of your safety. Regulations are strictly enforced to protect you and the park's resources.
Do not approach wildlife, no matter how tame or calm they appear. Always obey instructions from park staff on scene. You must stay at least 100 yards (91 m) away from bears and wolves and at least 25 yards (23 m) away from all other large animals - bison, elk, bighorn sheep, deer, moose, and coyotes. Do not feed any animals. It harms them and it is illegal.
Wolves are not normally a danger to humans, unless humans habituate them by providing them with food. No wolf has attacked a human in Yellowstone, but a few attacks have occurred in other places.
Like coyotes, wolves can quickly learn to associate campgrounds, picnic areas, and roads with food. This can lead to aggressive behavior toward humans.
What You Can Do
To date, eight wolves in Yellowstone National Park have become habituated to humans. Biologists successfully conducted aversive conditioning on some of them to discourage being close to humans, but two have had to be killed.
Boardwalks and trails protect you and preserve delicate formations. You must stay on boardwalks and designated trails. Scalding water underlies most of the thin, breakable crust. Pools may be near or above the boiling temperature and can cause severe, possibly even fatal, burns.
Yellowstone's weather can change quickly and bring cold temperatures, high winds, rain and falling snow.
Following the fires of 1988, thousands of dead trees, known as snags, were left standing in Yellowstone. These snags may fall with very little warning. Be cautious and alert for falling snags along trails and roadways, and in campsites and picnic areas. Avoid areas with large numbers of dead trees. Again, there is no guarantee of your safety.
Please see our backcountry pages to learn important tips for staying safe in Yellowstone's backcountry.
WaterDo not take risks while fishing, wading, or crossing streams: park waters can be deceptively cold and swift.
Yellowstone's East Entrance road crosses 20 avalanche paths through Sylvan Pass. Avalanches also occur in other park locations. Additional information on avalanches can be found online at: