Answer to Question #259865 in Biology for Enhle

Question #259865

Why whales and dolphins considered mammals and not fish?


1
Expert's answer
2021-11-02T17:25:02-0400

Dolphins and whales are mammals. Like all mammals, they breath air, are warm blooded, give birth to live young, lactate and have hair. The ancestors of whales and dolphins lived on land millions of years ago and it is thought they were small dog-like mammals.


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