If you visit Yellowstone National Park now, you'll find feeding bears solidly in the "don't" column. But, there was an era many years ago when people were not only allowed to feed bears in Yellowstone, the practice was sort of encouraged.
It's not unusual to have an encounter of the bison kind when you visit Yellowstone National Park. A new video from someone's summer vacation last year shows how a huge bison showed them how small their car really is.
It's not hard to accidentally get up close and personal with wildlife in Yellowstone. One family learned that the hard way a few years ago when they had a grizzly bear get very friendly with their car.