The world's pet population stands at a staggering 57 million. But for some, owning a cat or a dog just isn't enough. Around the world thousands of dangerous animals live as human companions. Why do people want to live with large animals, or choose a pet that could so easily kill them? There's a seven-foot Russian bear, who regularly has meals with his owners. Then there's Jilly, an eight-foot-long deadly salt-water crocodile, who has sleepovers at her owner's house in Melbourne. Meanwhile, Mike and Valerie in Minnesota are parents to a one-tonne buffalo called Cody who has to be showered in the local car wash and who goes on nights out to the local bar. There's also a tiger and a wallaby in this one-off documentary that explores the unusual relationship between owners and their exotic pets.