Subscribe | UPI Odd Newsletter Subscribe NAGASAKI, Japan, April 29 (UPI) -- A Japanese zoo showed off the jaw power of some real-life Hungry Hungry Hippos by demonstrating their ability to devour whole watermelons. The video, posted to YouTube by the Nagasaki Bio Park, shows a keeper at the zoo tossing whole watermelons into the mouths of the hippopotamuses, which chomp down on the large fruits to explode them in a way that would make Gallagher's hammer envious. Advertisement