Keeper Caleb challenges award-winning wildlife photographer Will Burrard-Lucas to capture a 'prey's-eye-view' of his lions and tigers. But can Will's remote-control buggy camera survive some of the planet's most ferocious predators? Arabella the binturong isn't eating and no-one knows why - can the vets get to the root of this mysterious animal's ailment before it is too late? Ben tries to win over a parrot whose beak is still out of joint from his visit last year, while Jean Johansson gets closer than ever before to the world's largest snail and meets a surprising predator.