Timothy Treadwell (born Timothy Dexter; April 29, 1957 – October 5, 2003) was an American bear enthusiast, environmentalist, amateur naturalist, and documentary filmmaker and founder of Grizzly people. 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 by a 28-year-old brown bear, whose stomach was later found to contain human remains and clothing.