The deadliest animal in Africa isn't the lion or the crocodile -- it's the hippopotamus! Hippos have razor-sharp tusks, weigh as much as fifty men, and can run twenty-five miles per hour. Follow these hefty hulks as they glide underwater, play tug-of-war, swat balls of dung at one another, and nuzzle their young in the mud. Just don't get too close -- they could chomp you in two!