The games begin for keepers when orangutan Malu destroys his playroom. An elderly horse must undergo a risky procedure, and keepers must decide if it’s time to say goodbye to one of the zoo’s beloved giraffes.

Jonathan and Angela return to Maasai Mara to reunite with the Marsh Pride.

Jonathan and Angela follow the lives of big cats in Kenya.

Jonathan and Angela Scott follow the lives of lion packs in Maasai Mara.

Jonathan and Angela Scott return for the wildebeest migration

Five cheetah males work together during a hunt.

In the pride, a leopard cub learns a valuable lesson of survival.

Kenya's Masai Mara is one of the best places in Africa to see the continent's largest cat. Lions have lost 90% of their historical range with less than 25,000 in the wild. We set out to learn what is putting lions in danger—even in protected areas.

The endangered cheetah is the speed king among big cats. Lions and hyenas are their greatest enemy, among many other dangers they face. What will it take to ensure the cheetahs survival?

The leopard is the most widespread and numerous of the big cats. It hunts day or night and easily disappears into the shadows. In this episode, we learn about the leopards' survival instincts and the dangers the big cat faces.

Forrest searches for a Zanzibar Leopard on this history-making expedition.

Forrest searches for the large, furry Pachylemur in the Madagascar jungle.

Forrest and a specialist in Newfoundland search for the White Wolf.

Forrest combs the Everglades for the supposedly extinct Black Wolf.

Forrest attempts to find the Javan Tiger on the vibrant island of Java.

Forrest heads deep into Australia to find the unique Tasmanian Tiger.