A heart-stopping moment at an American zoo turned into an unbelievable scene of animal empathy when a young girl fell over a low railing into a polar bear moat. Captured by dozens of onlookers, the footage shows the massive 800-pound predator approaching the terrified child as she sat huddled in the artificial snow. The bear initially stood over her and let out a bone-chilling growl, baring its massive teeth, while the crowd above screamed in panic. However, in a shocking turn of events, the bea