Jack Hanna's Animal Adventures

A look at efforts by the Chicago Academy of Sciences to help endangered peregrine falcons. Also: Pacific walruses and a giraffe at the Brookfield Zoo in Illinois.

Jack visits with animal trainers to learn the fundamentals of their occupation. Also: trained animals used in films.

Alligators are observed at Gatorland in Florida. Included: herpetologists discuss the feeding of alligators and the hatching of eggs.

A visit to Chicago's Shedd Aquarium to observe marine mammals, including beluga whales; Alaskan sea otters; and dolphins.

Jack visits a man who has raised a black bear since it was a cub; and the Grizzly Discovery Center in West Yellowstone, Mont.

Marine life near Martha's Vineyard, Mass., including finback and minke whales. Also: a naturalist discusses whale behavior.

Wildlife at Montana's Glacier National Park, including bears, wolves and goats. Also: Hanna talks with a wildlife photographer.

Jack visits Plymouth, Mass., to examine an animal-breeding program designed to preserve endangered species.

Wildlife at Yellowstone National Park, including grizzlies, wolves, deer, bison and cougars. Also: rangers recall the park's history.

A visit to Busch Gardens in Tampa. Observed: koalas, black rhinos and white tigers.

A visit to the Cincinnati and Columbus zoos to observe insects, including hissing cockroaches and assassin bugs.

The work of veterinarians. Included: the treatment of a bear and a horse.

Domestic and wild cats. Included: cheetahs, tigers and mountain lions.

A look at zoo animals that travel as part of education programs. Included: animals from the Columbus (Ohio) Zoo, observed with elementary-school students in Connecticut.

Jack visits an Arctic explorer and learns all about sled dogs.

A visit with animal trainer Doug Seus, who trained the grizzlies that starred in the 1988 film "The Bear."

Jack observes animals in Las Vegas, including bottlenose dolphins that are used to help autistic children; tortoises at a conservation center; and wild burros.

A look at apes. Included: gorillas, chimps and orangutans.