Watch Inside Noah's Ark - Tales of the Grassland

In Tales of the Grassland, meet Gus van Dyk, handsome, charismatic, dedicated head ranger at Pilanesberg National Park in South Africa. In this first episode, Gus tries to learn the language of lions -- what they mean when they roar -- so, ironically, he can use the top predators to help protect endangered species. Aired on Discovery, Animal Planet, PBS and 15 international networks.