The return of TV's popular wildlife saga following the dramatic lives of the Big Cats in Kenya's Masai Mara. In the first episode of this week long event, Simon King introduces Notch, the lone male ruler of the Marsh pride of lions - he's looking vulnerable to a violent takeover. Saba Douglas-Hamilton is amazed to find Bella the leopard still with her grown-up son Chui - he's now bigger than his mum but is still refusing to leave home. Jonathan Scott introduces a new star - tiny cheetah cub, Toto. He's small, feisty and incredibly cute - but mum has got a huge battle on her hands to keep him out of trouble. Show less