Dirección: Werner Herzog
Entre 1990 y 2003, Timothy Treadwell, camarero, actor ocasional y ex-alcohólico, pasó catorce veranos conviviendo con los osos grizzly. Él mismo grabó con su cámara de vídeo sus estancias en Alaska y su obsesiva relación con los plantígrados (unas cien horas). Werner Herzog usó parte de este material. El último verano, uno de los osos atacó a Timothy y a su novia Annie.
Timothy Treadwell
Self (archive footage)
Werner Herzog
Self / Narrator (voice)
Warren Queeney
Self - Actor, Close Friend
Willy Fulton
Self - Pilot, Former Rodeo Rider
Sam Egli
Self - Egli Air Haul
Marnie Gaede
Self - Ecologist
Marc Gaede
Self - Ecologist
Larry Van Daele
Self - Bear Biologist
Sven Haakanson
Self - Alutiiq
Franc Fallico
Self - Coroner
Jewel Palovak
Self - Grizzly People
Amie Huguenard
Self (archive footage)
Carol Dexter
Self - Timothy's Mother
Val Dexter
Self - Timothy's Father
Kathleen Parker
Self - Close Friend
Rowdy the Bear
Self (archive footage)
John Rogers
Self (archive footage) - Journalist
Olie the Bear
Self (archive footage)
The Grinch
Self (archive footage)
Champion the Fox
Self (archive footage)
Timothy Treadwell
Self (archive footage)
Werner Herzog
Self / Narrator (voice)
Warren Queeney
Self - Actor, Close Friend
Willy Fulton
Self - Pilot, Former Rodeo Rider
Sam Egli
Self - Egli Air Haul
Marnie Gaede
Self - Ecologist
Marc Gaede
Self - Ecologist
Larry Van Daele
Self - Bear Biologist
Sven Haakanson
Self - Alutiiq
Franc Fallico
Self - Coroner
Jewel Palovak
Self - Grizzly People
Amie Huguenard
Self (archive footage)
Carol Dexter
Self - Timothy's Mother
Val Dexter
Self - Timothy's Father
Kathleen Parker
Self - Close Friend
Rowdy the Bear
Self (archive footage)
John Rogers
Self (archive footage) - Journalist
Olie the Bear
Self (archive footage)
The Grinch
Self (archive footage)
Champion the Fox
Self (archive footage)
Timothy Treadwell
Self (archive footage)
Werner Herzog
Self / Narrator (voice)
Warren Queeney
Self - Actor, Close Friend
Willy Fulton
Self - Pilot, Former Rodeo Rider
Sam Egli
Self - Egli Air Haul
Marnie Gaede
Self - Ecologist
Marc Gaede
Self - Ecologist
Larry Van Daele
Self - Bear Biologist
Sven Haakanson
Self - Alutiiq
Franc Fallico
Self - Coroner
Jewel Palovak
Self - Grizzly People
Amie Huguenard
Self (archive footage)
Carol Dexter
Self - Timothy's Mother
Val Dexter
Self - Timothy's Father
Kathleen Parker
Self - Close Friend
Rowdy the Bear
Self (archive footage)
John Rogers
Self (archive footage) - Journalist
Olie the Bear
Self (archive footage)
The Grinch
Self (archive footage)
Champion the Fox
Self (archive footage)