This research project by the U.S. Army is centered around Fort Carson, Colorado. Bobcats are captured through the use of dogs and horse and then fitted with radio collars.

Setting takes place in the African country of Zambia and shows how Oxbow Lagoons are formed by the meanderings of the Luangwa River covering three different times of the year.

This episode will film the adventures of puma kittens from their birth in the Uinta Mountains of Utah until they are weaned from their mother.

In "Valley of the Beavers, Part I," the journey begins in the mesmerizing landscapes of North America, where the intricate lives of beavers and their ecosystems are the focus of exploration. This episode delves deeper into the complexities of the beaver's habitat, showcasing the remarkable engineering skills of these industrious rodents as they construct dams and lodges that significantly impact their surroundings.

In "Valley of the Beavers, Part II," the journey continues in the mesmerizing landscapes of North America, where the intricate lives of beavers and their ecosystems are the focus of exploration. This episode delves deeper into the complexities of the beaver's habitat, showcasing the remarkable engineering skills of these industrious rodents as they construct dams and lodges that significantly impact their surroundings.

When the Guri Dam was built on the Caroni River in the wilderness of eastern Venezuela, it created a huge lake that flooded 500 square miles of prime wildlife habitat. Marlin Perkins, Jim Fowler and Stan Brock help capture these stranded animals.

The lemurs evolved in many forms and colors in the antiquity of time and then stopped, but they still prevail. Madagascar has been called the Noah's Ark of ecological riches and it is the only place in the world where lemurs are found in the wild.

Baja, California is the setting for study of the Hammerhead Sharks and other marine life including a 20-foot whale shark. An underwater ballet is performed by a giant manta ray.

Marlin observes a project that identifies and inventories animals in Gran Chaco National Park in Paraguay.

Marlin visits the primitive white lemur that live in Madagascar.