Hippos rest in the water during the day and eat grass at night on land.
Hippos are artiodactyls which means they are grouped with animals that have an even number of toes.
Some other even-toed animals are pigs, goats, giraffes, deer, and camels. Hippos have four toes. Hippos spend most of the day in water splashing swimming and feeding on plants that grow on the river floor. Hippopotamuses usually remain submerged for 3-5 minutes, though their gigantic lungs can hold enough air to stay below for up to 30 minutes.