Timothy Treadwell was obsessed with grizzly bears and spent 13 years camping among them in Alaska. Despite warnings from friends and family, he continued his trips, driven by his passion for these salmon-eating giants.
Tragedy Strikes

During what was supposed to be a routine trip, Treadwell and Huguenard encountered a bear. While filming, the bear attacked Treadwell, mauling him to death as Huguenard recorded in shock.