Hippopotamuses are also called hippos. Hippos live to 25 to 40 years. They are fat mammals. Hippos are found in areas that have water like in ponds, lakes, revers and etc. Baby hippos weight 25 to 50 kg. An adult male hippo weights 1,500 to 1,800 kg and an adult female hippo weights 1,300 to 1,500 kg. Hippo’s speed is 48 km/h (Maximum, On Land, Running). A hippo’s family is called Hippopotamuses. hippos eat an average of only 88 pounds (40 kilograms) of food a night.