From the category it belongs to, the fur seal belongs to the class Mammalia, so it is a mammal.Some of their key characteristics are mammals, such as the lungs, breathing organs, breathing lungs, need to be out of the water when breathing; Also, they also have the viviparous way of reproduction, after the production will have lactation and so on.From a more detailed classification, fur seals are carnivores, pinnipeds, sea lions in the family of animals.Therefore, if the fur seal is divided according to its feeding habits, it is a carnivore.From the point of view of kinship, fur seals and sea lions are closely related, because they are all in the family of sea lions.
From the point of view of living environment, sea dogs live in the ocean, and from this point of view, they belong to marine animals, or aquatic animals.Taken together, the fur seal is a marine mammal, or aquatic mammal.
a fur seal is a mammal, and there is no doubt that it is a mammal.Although they live in water, they share some key characteristics of mammals with land mammals, and they can not be regarded as non-mammals just because they live in water.For example, as mentioned above, the breeding method of fur seals is viviparous, and after the female fur seals give birth, there will be a lactation period, during which the female fur seals will feed milk to the young fur seals and take care of them; And breathing with lungs and so on.The above characteristics are the key characteristics of mammals and the commonness of mammals.
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