Sanctuary

S1, E1: Katavi National Park is a sanctuary for the resident lions, hippos and crocodiles, but six weeks have passed without rain. The buffalo herds that provide an abundance of prey for the lion pride, are late. Bull hippos clash in a fight over territory in a dangerously dwindling river, and in blazing heat, cold-blooded crocs must choose between protecting their eggs or staying cool enough to survive.