Planet Earth II

Remote islands offer sanctuary for some of the planet's creatures, including the rare, pygmy three-toed sloth. For marine iguanas, however, island life comes at a cost as they must escape deadly racer snakes the moment they hatch.

While mountain ranges are some of the planet's most spectacular landscapes, few animals have what it takes to live in the harsh habitats. From snow leopards to grizzly bears, the secret lives of mountain creatures are revealed.

Jungles are mysterious worlds of drama and surprise.

The brutal extremes of deserts shape remarkable stories.

Grasslands are home to Earth's great wildlife spectacles.

While cities may seem an unlikely place for animals to thrive, they can be a world of surprising opportunity. Peregrine falcons hunt among New York's skyscrapers and in Ethiopia, locals live in harmony with wild hyenas.

Cities are the fastest growing habitat on Earth but, for animals, life in the manmade world is not easy. Some are successful - Leopards prowl the streets of Mumbai and Peregrine falcons hunt amongst New York's skyscrapers. Many creatures, however, are struggling to cope in the urban jungle. As the architects of our future will we choose to build cities that are home both for us and for wildlife?