Timothy Treadwell (April 29, 1957 – October 5, 2003) was an American bear enthusiast, environmentalist, amateur naturalist, eco-warrior and documentary film maker. He lived among the coastal grizzly bears of Katmai National Park in Alaska, USA, for approximately 13 summers. At the end of his 13th summer in the park in 2003, he and his girlfriend Amie Huguenard were killed by a grizzly bear.[1] Treadwell's life, work and death were the subject of the 2005 documentary film by Werner Herzog titled Grizzly Man 十三年来的每个夏天，叫Timothy Treadwell的年轻人都在野外渡过，他和灰熊住在一起，观察它们，拍摄它们，成立了民间组织来保护他们，最后和女友一起葬身于一只冬眠之前寻找食物的老熊之腹。 Timothy Treadwell曾是不入流的演员，大学期间因酗酒过度缀学，即使投身保护灰熊之后，他仍受困于抑郁（或焦虑）的病苦中，严重时需要药物治疗。 在生命最后的八年中，他留下了大约一百个小时的胶片。除了女友的三个短暂镜头，多数时候他一个人和灰熊在一起，远远观望或近距离交流。最后的镜头摄制于死前数小时，飓风将至，灰云狂风中他仍然徘徊于镜前不愿离去。之后灰熊冒着暴雨袭击了营地，摄像带录下了人和灰熊搏斗的声音。人们只找到他们的残肢和一块尚在走动的手表。
