A bison calf has been euthanized at Yellowstone National Park after concerned tourists put it in their car.
A woman was attacked in Yellowstone National Park while posing for a selfie with a bison.
A grizzly bear got up close and personal with a family in Montana and it was all caught on camera.
Video captured at Yellowstone National Park shows a group of tourists fleeing a mother black bear and her three cubs.
A buffalo was caught on camera charging full speed into a parked SUV inside Yellowstone National Park.
A group of tourists from Massachusetts say they got some harsh treatment from National Park Service rangers at Wyoming's Yellowstone National Park soon after the partial government shutdown went into effect last week. Some have described "Gestapo"-like tactics by the armed rangers, who made the visitors get back in their bus when they got out to take pictures.
Fires from Alaska to California continue to rage today, with a new blaze near Yosemite National Park in California causing concern.