Wildlife in Masai Mara, Kenya; plants; a bushman demonstrates survival techniques.

In Kenya, Jack visits a giraffe center and a school where children are learning about wildlife conservation.

Jack's trip to Africa is highlighted with clips and anecdotes.

In Uganda's Bwindi Impenetrable Rain Forest, Jack seeks the mountain gorilla.

Jack investigates the bond that unites conservationists, zookeepers, researchers and animals.

At a Florida turtle hospital, Jack helps free a wounded turtle from a fishing line and learns about a new virus.

Hundreds of snakes await Jack at a Florida serpentarium, where venom is extracted for various uses.

Infant walruses and elephant seals are among the pinnipeds Jack observes in the Pacific.

A bird trainer introduces Jack to a talking parrot and demonstrates his training techniques with macaws and condors.