Although hippos are terrestrial animals, they spend more than half of their day in the water. This is because hippos are not covered with hair. Under the influence of tropical climate in Africa, the sun is easy to dehydrate hippos. Secondly, hippos have short limbs and stand on land for a long time, which is too heavy on their legs. Therefore, they can avoid the heat in the water, It can also reduce the pressure of the body on the limbs and kill two birds with one stone.
Hippos mainly eat plants (occasionally eat animal carcasses, but rarely), so when there is less water and grass, they will also come to the shore to eat grass. Hippo, like other herbivores, has a high degree of sociability, and it also has a strong sense of territory. As long as it is near the waters where it operates, it does not allow any animals to approach except elephants, including the lion, the "king of the grassland".