Camouflaged spy cameras go `undercover' in the animal world. Spy Penguin records the mating season, while Spy Tortoise and Spy Bushbaby keep watch on chimpanzees.
Undercover cameras help to explore the world of animal intelligence, ingenuity and creativity in their hunting, protection and health.
How animals rely upon each other, from arctic wolves banding together to survive and hippos being cleaned by fish to prairie dogs and owls warning of impending danger.
Animals getting up to mischief, from birds stealing fish and elephants having temper tantrums to cheating chimps and lemurs getting high by sniffing toxic millipedes.