The purpose of visiting the zoo is to have fun. But on a spring day in 2009, the polar bear enclosure at Berlin Zoo erupted in howls of panic, turning the park into a life-or-death situation. When a horrifying and extremely uncommon incident occurred in front of the visitors’ eyes on a spring day, they were in for the shock of their lives. Even after all these years, people are still interested in this subject, and it’s understandable why. After all, visitors don’t often find themselves in a polar bear habitat where cameras record every breathtaking moment….