The biggest of the big cats is declining fast, killed because it's developed a taste for beef - cows are much easier to catch than wildebeest in many parts of Africa. This film investigates solutions with help from big cat expert Jonathan Scott, a Masai entrepreneur, and a South African vet who's setting up a lion sperm bank.

Jonathan Scott narrates the extraordinary story of the leopard - the one big cat that still survives across half the world while tigers, cheetahs and lions are all struggling. By following the lives of leopard mothers and their cubs in East Africa the film investigates what it is about the natural history of these cats that makes them born survivors. Perhaps the most extraordinary revelation is that leopards are living undercover on farms and even in cities across Africa and Asia.