The hippopotamus is a kind of mammal that we are familiar with. They are widely distributed in Africa, especially in places where aquatic plants are abundant.Hippos spend a lot of time in the water during the day looking for food because they eat so much.But they don't stay in the water all the time, they also come to the shore.Hippos tend to come ashore to rest at night and forage for food when they are hungry.
Some people think that hippos are amphibians because they can move both in the water and on land.In fact, the hippopotamus is not an amphibian, but a mammal in the mammalian class.Mammals and amphibians are two kinds of animals that are quite different, they do not intersect, and mammals are relatively advanced by comparison.As a mammal, hippos are different from amphibians in many ways.For example, reproduction methods are very different, hippos use viviparous reproduction, amphibians are oviparous; Hippos, for example, are endotherms, while amphibians are poikilotherms.
As mentioned above, a hippopotamus is a mammal, not an amphibian.As a mammal, hippopotamus is also a relatively advanced animal, and some of its body structure is also relatively advanced.The hippopotamus has a lung structure and uses the lungs to breathe.This makes them unable to submerge for long periods of time.Generally speaking, hippos need to breathe out of water every 3-5 minutes.Some hippos persist for a long time, can persist for about half an hour, but hippos can not be too long out of the water, otherwise there will be a risk of drowning.
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