Hippos may look slow and sleepy, but don’t be fooled—they are powerful swimmers and can run surprisingly fast on land! These massive mammals spend most of their day in the water to stay cool under the hot sun. Despite their size, hippos are graceful in the water, using their webbed feet to glide effortlessly. At night, they leave the river to graze on grass, munching up to 80 pounds of food in one go!