A momma black bear and her three cubs scared Yellowstone tourists on a bridge on May 8, 2015. The incident happened in Yellowstone near the north entrance (Gardiner, Montana). Winston Greeley from Montana Fish, Wildlife and Parks was there and captured a video of the chase.
The bears surprised the tourists who turned and ran to their cars using the car doors as shields. Luckily, no one was hurt but a sow bear with cubs is not an animal that you want to cross paths with. After a few minutes, the bears made it safely back into the woods.
Read our article on safely observing wildlife in Yellowstone and watch a few more videos where animals felt challenged.