In Ruaha, Tanzania lions form huge super prides to hunt the most formidable prey. In Sri Lanka a tiny rusty-spotted cat explores its jungle home. A male snow leopard in the Himalayas searches for a mate.

Advances in remote and low-light filming reveal the secret lives of the world's most mysterious cats. In Mongolia the Pallas's cat, in South Africa the tiny black-footed cat and a serval thriving in an industrial landscape.

High-tech collars reveal that straight line speed isn't the cheetah's greatest weapon but its ability to brake, change direction and accelerate. The Iberian lynx faced extinction but is recovering thanks to captive breeding.