Rani Price and Johny Pitts follow the keepers at the Port Lympne and Howletts wild animal parks as they take care of the animals. Brown hyenas are lean, mean and very rarely seen - even in the wild. The only ones in Britain are in the park and a keeper has to go in with them, despite the danger. The biggest tigers in the world are hungry for red meat - but will they be able to hunt down their dinner? And the twin Roar Rangers struggle to shift a mountain of rhino poo.