What Is the Opposite of Mammal?

Answer

Since mammals are vertebrate animals, the opposite of mammals would be the invertebrate animals such as molluscs, worms and insects. Mammals are members of class Mammalia; the air-breathing vertebrate animals that mainly feed their young on mother's milk.
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The largest mammal in the world is the Blue whale. The largest land animal is the African elephant, so it depends on what you are looking for.
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Egg laying animals are known as oviparous. Mammals are viviparous. your_guide123@yahoo.com
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