From the love and devotion of an elephant family to dancing birds of paradise and flirting polar bears, this episode explores animal emotion in all its forms.

Tools, medicine and drugs can all be found in animal societies. Meet the chimps who throw stones and hunt with spears, the elephants who use branches as fly swats and the lemurs who get intoxicated on the secretions of millipedes.

Relying on your friends is far from being uniquely human. From wolf society to the surprising partnerships between different species, this episode finds out why cooperation is so important to animals.

From delinquent meerkats to thieving penguins, animals misbehave, but they also have a surprising sense of justice.

Full of funny and unexpected moments, this behind-the-scenes look at Spy in the Wild shows the extraordinary effort that goes into making the spy cameras part of animal families.

Our Spy Creatures investigate the extraordinary wildlife that thrives in the tropics and the events and gatherings that happen across the year. For the first time, our Spy Creatures record how gorillas sing when they are enjoying their meals, and in a comical moment they experience the noisy after-effects of their vegetarian diet. In Brazil, Spy Jaguar Cub explores a beautiful gathering of water birds, capybara and caiman and joins Spy Caiman to film a feeding frenzy as its wild counterparts go fishing. In Costa Rica, Spy Turtle and Spy Vulture gain an insider's view of the spectacular turtle arribada as thousands jostle for a place on the beach to lay their eggs. In Zambia, Spy Hippo takes us into the heart of a hippo pod, and is too close for comfort as it films a dramatic fight. Spy Dolphin and a host of other Spy Creatures, such as Spy Monkey, Spy Sloth and Spy Macaw, take us into the mysterious world of the Amazon's flooded forest, and in northern Australia, Spy Bat becomes immersed in a nursery of little red flying foxes and joins them on the wing as they risk getting snapped up by hungry fresh water crocodiles. Spy Orangutan returns to Borneo to investigate the extraordinary bulbous-nosed proboscis monkey and some curious orangutans. In incredible scenes, Spy Baby Elephant uncovers the secret world of pygmy forest elephants, and in a thrilling finale, Spy Penguin and Spy Seal join Humboldt penguins as they bravely navigate thousands of angry sea lions as they try to return to their hungry chicks.