Extreme isolation protects and transforms New Zealand's ancient native creatures.

The ways that New Zealand's ingenious wildlife have adapted to survive.

New Zealand's changing fortunes and how its wildlife evolved.

At just 14 years old, when most boys his age would probably rather be riding bikes and playing video games, Jack Randall left his home in England to become an apprentice to "The Crocodile Hunter" Steve Irwin, learning to handle snakes and other reptiles. Today, Randall continues his research into exotic, endangered and iconic animal species by venturing into some of the most unforgiving environments on the planet. With no creature deemed too creepy or dangerous to handle, Randall faces down deadly crocodiles, unpredictable pythons, endangered green turtles, feral camels, venomous snakes, wild kangaroos and more.

From the Arctic Ocean and its isolated Islands to the bleak, barren tundra and frozen forests of the taiga, the Arctic region is locked in ice for more than half of the year; in summer, this land of contrast bursts into life.

Beyond the battle scars and the fortifications from decades of conflict, South Korea still boasts areas of great wilderness with intriguing animals, some of which share extraordinary relationships with humankind.

Exploring the wild animals and landscapes of New Zealand.

A look at some of the most lethal animals on the planet.

The hidden beauty of the national parks of the United States.

Dr. Brady Barr, a herpetologist by trade, travels all over the world to study reptiles and other creatures in their native habitats, often risking his life in the process. His mission is two-fold: to collect as much information as possible about the animals he studies and to inform the public about the state of the planet and the risk of extinction many animal species face. And, of course, there's another benefit to all his work: It makes great TV.

Following Botswana's most iconic and charismatic creatures as they look to mate and bring up a family in a world full of dangers.

Animal rescue centers who rescue, care and rehabilitate sick, injured and orphaned wildlife.