The beauty of big cats has long captivated our imaginations, yet these majestic predators now face a battle to survive.
With Africa's lion population suffering a decline of over 90% in the last 50 years, cheetahs disappearing from over 75% of their range and the fact that there are now more tigers living in captivity than in the wild, there is a very real problem.
Big Cat Week is our annual week of programming dedicated to these fantastic felines.
Featuring UK premieres and never-before-filmed behaviour in the wild, you will follow cheetahs, look at lions and put pumas under the microscope.
Big Cat Week airs all week at 9pm.
Help Save Big Cats! Click here to Donate to National Geographic's Big Cats Initiative and raise money for field research.