Siberian Tiger, The Secret Kingdom

Using a combination of remote cameras, long lens and drone filming, and told across the seasons, the Secret Kingdom of the Amur Tiger takes you deep inside this remote kingdom to unveil long held secrets about these shy and elusive hunters; how they navigate and co-exist along secret corridors, use secret messaging to communicate to one another, hunt their prey and exploit the seasons, with the ultimate ambition of finding a partner and bringing new life in to this world. (National Geographic)