Animal facts never stop surprising us. There's always something about the animal behavior that we can hardly explain. For example, have you ever paid attention to the way geese fly? They're known for performing the so-called 'whiffling' - flying upside down. They turn their heads 180 degrees back upright and flip their bodies around. Why would they do that? Let's check out this one and 28 more curious animal facts. Learn more about your ad choices. Visit megaphone.fm/adchoices