Supposed fatality when a man was attacked in Yellowstone by a female grizzly bear after he prodded her cub with an umbrella. (The validity of this incident is questionable.)

A grizzly killed a man in a roadside camp in Yellowstone.

A person was killed by a bear at the Old Faithful campground

A man was killed by a park grizzly in the park after approaching to within 50 feet of the animal while it was feeding on food that had been left out.

Barrie Gilbert was walking fast on a treeless, 9,200 foot ridge in Yellowstone National Park, seeking a high perch where he could watch for bears with his binoculars. Suddenly, a bear appeared, rising from a day bed.

Gilbert ran, but the bear was on him fast, crunching its teeth into the back of his head, tearing the scalp from his skull and mauling his back. Then Gilbert rolled over and tried to fight. The bear tore off much of the left side of his face, including an eye.

A grizzly bear killed a backpacker at a backcountry campsite on the southern end of White Lake in Yellowstone.

A photographer was killed by a grizzly after coming too close to the animal in Yellowstone's Hayden Valley.

Brian Matayosi, 57, was killed after a grizzly sow attacked him on the Wapiti Lake trail near Canyon Village in the park. The sow had young cubs, and park officials determined the attack was defensive rather than predatory.

John Wallace, 59, was killed after being attacked by a grizzly on the Mary Mountain Trail in Yellowstone.

In late June 1983, a fatality occurred in the Gallatin National Forest outside the park when an adult male grizzly bear attacked a camper in the Rainbow Point Campground.

Hunting guide Joe Heimer and a woman client were after some elk on a Friday morning in November 1996, hunting a ridgeline on the Church Universal and Triumphant's ranch just north of Yellowstone National Park.

The incident began when Heimer and Sonya Crowley crossed a little hump, their mind focused on elk, and a grizzly charged. It ended moments later, leaving both people seriously injured, the bear dead and three cubs motherless.

A grizzly bear attacked two hikers in the Gallatin National Forest’s Deer Creek area. They both sustained non life-threatening injuries.

State biologists euthanized a grizzly bear that had been “frequenting” a private campground west of West Yellowstone.

Yellowstone National Park staff euthanized a grizzly bear after it aggressively approached, then charged a man sitting on the north edge of Yellowstone Lake. The man threw his pack at the bear, which tore into the man’s pack and ate the food inside.