A porpoise looks like a fish, but is really a mammal. They are actually a type of dolphin, and belong to the same family as dolphins and whales. The porpoise is a warm blooded animal. And has a layer of fatty blubber, to keep it warm in chilly seas. Its babies are born alive and not hatched from eggs, and drink their mother’s milk. So you see, in this respect, porpoises are just like humans and other mammals.
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