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.
Q&A Related to "What Is the Opposite of Mammal"
There is no "opposite" of mammals, only different life forms, such as reptiles (cold-blooded, egg-laying) or insects (very dissimilar) or bacteria (not multicellular) Mammal
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Mammal is a classification, within a group of many other classifications, with
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A placental mammal is one having a placenta. This excludes monotremes or marsupials, pouched mammals.
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The short-beaked echidna and the duck-billed platypus are the two mammals that lay eggs. The echidna resembles a porcupine, but it is a completely different animal. Know More The
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