Timothy Treadwell (born Timothy Dexter; April 29, 1957 – October 5, 2003) was an American bear enthusiast, environmentalist, amateur naturalist, eco-warrior, and documentary filmmaker. He lived with the grizzly bears of Katmai National Park in Alaska for 13 summers. At the end of his 13th summer in the park in 2003, he and his girlfriend Amie Huguenard (October 23, 1965 – October 5, 2003) were killed and partially eaten by a grizzly bear.[1] Treadwell's life, work, and death were the subject of Werner Herzog's critically acclaimed 2005 documentary film Grizzly Man.[2]