Katmai National Park and Preserve is famous for its population of grizzly bears, which thrive thanks to its remote location and the thousands of salmon that travel upstream to spawn in the fall, just as the bears are fattening themselves up for hibernation. This has led to the creation of Fat Bear Week, where members of the public vote for the bear that has piled on the most pounds before the winter.
It's the perfect place for scientists to research the animals' behavior. However, even experts can't always predict how wildlife will react to their presence, and a group of biologists shared a video last week showing what it's like when a bear comes barrelling towards you
