Icy Antarctica is a land of survivors enduring the most hostile conditions on Earth.

Asia is the largest and most extreme continent on our planet, stretching from the Arctic Circle in the north to the tropical forests on the equator. The animals here face the hottest deserts, tallest jungles and highest mountains found anywhere on Earth.

The most species-rich continent on Earth; in the Andes, pumas hunt guanaco while rarely seen bears search for mini avocados; in the Amazon, poison dart frogs care for their babies, colorful macaws eat clay and birds make death-defying flights.

A land cast adrift at the time of the dinosaurs; kangaroos and wombats brave snowstorms and gum tree forests are filled with never-before-seen predators.

High above the city of Gibraltar, Barbary macaques, Europe's only non-human primates, live lives full of kidnappings and high drama; in the cemeteries of Vienna Grave Robbing European hamsters do battle with each other for food.

More than any other continent, North America is defined by extreme weather and seasonal change; for animals that live here this poses great challenges, but for those with a pioneering spirit it can also offer great rewards.