Plant-Eating Hippos Are Among the Most Dangerous Animals
Although Hippos primarily only eat plants they are one of the most aggressive animals on Earth. Reports say hippos kill about 500 people in Africa each year. Hippos weigh between one-and-a-half and four tons, and can grow up to 14 feet long. They spend up to 16 hours a day lumbering along the bottoms of rivers and lakes.