Hippopotamus is a mammal, hippopotamus often stay in the water, this feature is also an important reason for their name.However, hippos are not completely aquatic animals, and they sometimes come to land.Because they breathe with their lungs, they can live on land.In fact, hippos often come up to the land at night, sometimes finding grassy places along the river.
Although hippos can live on land, they can't stay for long.In fact, hippos spend most of their time in the water, because their skin will dry and crack if they are out of water for a long time, which is not good for their health.Moreover, hippos are large and very heavy, buoyancy can help them bear part of the weight in the water, if they go to land, their limbs will bear a lot of weight, a long time may make them unable to support.In fact, the water is cooler than the land, so hippos also like to go to the water.
Although hippos can live on land, they can not stay too long, in fact, they will return to the water after a period of time on land, and will not stay too long.Generally speaking, they will return to the water after an hour on land or at most a few hours, and they can't stand being out of the water for a long time.During the day, hippos are basically in the water, even if they sleep in the water.
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