
Bart was an Alaskan Kodiak bear born on January 19, 1977 at the Baltimore Zoo. When Bart was five weeks old and weighed five pounds (2 kg), he was sold to Doug and Lynne Seus, who worked as animal trainers for films. The Seuses trained Bart using a reward and praise system. While still a cub, he appeared in the TV series The Life and Times of Grizzly Adams playing Adams' companion bear, Ben, as a cub.
After reaching adulthood, he made his film debut in the film Windwalker (released 1981). He grew to 9' 7.5" (2.90 m) tall and weighed 1,500 pounds (680 kg) throughout his life as an adult.

Legends of the Fall
1994 · as Bear

Twelve Monkeys
1995 · as Bear

The Edge
1997 · as Bear

Homeward Bound: The Incredible Journey
1993 · as Bear

White Fang
1991 · as The Bear

The Bear
1988 · as The Kodiak Bear

The Great Outdoors
1988 · as The Bald-Headed Bear (Jody)

On Deadly Ground
1994 · as The Bear (uncredited)

Homeward Bound II: Lost in San Francisco
1996 · as Bear

The Clan of the Cave Bear
1986 · as The Cave Bear

Meet the Deedles
1998 · as Bear

Benji the Hunted
1987 · as Bear

Lost in the Barrens
1990 · as Bear

Windwalker
1980 · as Bear

The Giant of Thunder Mountain
1990 · as The Bear

The Gambler: The Adventure Continues
1983 · as The Bear

Berserker
1987 · as Bear Garmin (uncredited)

Louis L'Amour's Down the Long Hills
1986 · as The Bear