All of these videos take place in Yellowstone National Park and the surrounding area (the Yellowstone Ecosystem). There are many common misperceptions pertaining to encountering mother bears with cubs. Yes, it can be very dangerous when encountering a mother grizzly bear, but the danger comes from the misbehavior on the part of people. It can be a precarious situation. It is not the time or place to do something that will upset the mother bear.