Jean asked in Science & MathematicsZoology · 8 months ago

Is a whale a mammal or a fish?

Somebody said they are but they don't have no fur so how are there mammal

17 Answers

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  • Megumi
    Lv 6
    7 months ago

    A whale is a mammal. They are warm-blooded and give birth to live offspring, rather than laying eggs. 

  • 8 months ago

    Whales are mammals. Mammals are warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young. There are only 5 known mammal species that lay eggs, which includes the duck billed platypus and then 4 species of spiny anteaters, and all 5 of them live in Australia and New Guinea.

    And whales possess all mammal traits, including having hair. However, they mostly only have what would otherwise be visible hair when still developing in the womb, but many species of whales will then lose their visible hair shortly after they're born, although some species of whales do have visible hairs as adults, usually in the form of a few whiskers, but all species of whales do still have hair follicles, making them mammalian. It's just that by them evolving into water mammals they have lost a lot of their hair. (whales are believed to have evolved from an extinct animal called, "Pakicetus," same as hippos, which was a furry land animal that lived over 150 million years ago). And although you may not see their hairs, they have them, and have follicles for them, something reptiles, birds, amphibians and fish do NOT have. Instead they have scales (reptiles and fish) or feathers (birds) or a special moist breathable skin (amphibians).

  • MARK
    Lv 7
    8 months ago

    Whales are mammals and they possess the characteristics of mammals: hair composed of the protein keratin, ossicles, mammary glands, a four-chambered heart, a secondary palate, muscular diaphragm, a highly developed brain, endothermy* and homeothermy**, separate sexes with the sex of the embryo being determined by the presence of a Y or 2 X chromosomes, and internal fertilisation.

    *The ability to control own body temperature by physiology. **Maintenance of a relatively constant core body temperature.

  • 8 months ago

    Mammal. Breathes air. Has B00bs

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  • 8 months ago

    You're a mammal, and I doubt you have fur...

  • 8 months ago

    All whales are mammals, they have lungs and breath air as we do, they give live birth, nurse ther young on milk. No, their adapting to sea dwellers, their skin lacks air folicules.

  • |
    Lv 4
    8 months ago

    Whale-shark in the future will be mammal, with fur, same as whales. While ex whale Orca may become in future megalodon without fur. The only that has both of them within, is fish, and can be any time both - but heavy to be only 1 of them.

    Ie. whale is not a fish but transition, and fish has the whale in.

  • Jim
    Lv 7
    8 months ago

    Def: a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young, and breathe air. Whales have all of these.

    If you dive: Mammals have horizontal fins, fish have vertical!

  • 8 months ago

    The definition of mammals does not hinge on fur. I've know two humans who became completely hairless. Did that make them fish? There are also sphynx cats and naked mole-rats. However all of them (well, the females, anyway) have mammae that produce milk to nourish their offspring.

  • 8 months ago

    Dolphins, sea cows and other ocean mammals don't have fur either. They still birth live young, feed them with milk and are not fish.

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