Islands are wildlife sanctuaries, but surviving in isolation comes with extreme challenges.

The high peaks of the world are spectacular places where only the toughest survive.

The Jungle is home to more animal species than anywhere else on Earth.

Deserts are lands of such brutal extremes they have shaped remarkable survival stories.

Explore the world's cities and meet the wild animals that have found ways to survive here.

From vast herds to epic predator and prey battles, Grasslands are home to huge spectacles.