Episode list

Former hosts Jim Fowler and Peter Gros are reunited to introduce and recall their favorite moments from the series.

Examining one of the rarest big cats in the world, the Asiatic lion, in the Gir Forest of northwest India.

Examining the North American prairie that existed from the open meadows of the Midwest to the eastern foothills of the Rockies, and the unique plants and animals that populated it. Only 20% of the original prairie remains.

Two cheetahs are observed raising their cubs in the Masai Mara National Reserve in Kenya.

An orphaned giant otter cub named Sancho is adopted by veterinarian Carolina Vargas, who knows the animal must ultimately be released back into the Brazilian Pantanal wetlands.

South Africa's Phinda game reserve is home to the leopard. Zoologists Guy and Francois face many challenges tracking and protecting Doozie and other big cats. Their last hope is a new capture method.

The maneless lions of Kenya's Tsavo National Park are examined, and their reputation as man-eaters is laid to rest by Bruce Patterson of Chicago's Field Museum of Natural History, who has recorded the behavior of individual lions.

Diver's risk being crushed in an underwater landslide to explore how life survives under Stromboli, the world's most active volcano. Of particular interest is how octopuses seems to sense imminent eruptions enabling them to flee to a safe distance.

In Southern Africa, one of the largest elephant translocation projects in history is about to get underway. One thousand elephants need to be moved from the overpopulated Kruger National Park in South Africa into neighbouring Mozambique and the newly created Greater Limpopo Transfrontier Park- which will later join with Kruger. Tracking, darting, capturing and transporting elephants is the most challenging of any game capture. Having to do so 1000 times is a mammoth task. Even the world's most experienced elephant capture crew finds the prospect overwhelming. And the project is fraught with dangers, mishaps and seriously close brushes with death. If the team succeeds, they will have contributed to the creation of the world's largest wildlife sanctuary and a new home for Africa's endangered elephants.

Examining conservation efforts to save wombats, indigenous Australian tunneling marsupials, which are suffering declining populations. One species, the northern hairy-nosed, is on the brink of extinction.

Arctic cetaceans include the beluga, the bowhead and the narwhal.

World Wildlife Fund-Malaysia field researcher Englebert Dausip travels to Borneo to investigate pygmy elephants, which are three feet shorter than their Mainland Asian cousins, as they forage through thick jungle and steaming swamps.