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  1. Mammal - Wikipedia

    Around 6,640 extant species of mammals have been described and divided into 27 orders. [2] The study of mammals is called mammalogy. The largest orders of mammals, by number of …

  2. Mammal | Definition, Characteristics, Classification, Examples,

    Dec 22, 2025 · Every major habitat has been exploited by mammals that swim, fly, run, burrow, glide, or climb. There are more than 6,800 species of living mammals, arranged in about 125 …

  3. Mammals - Definition, Examples, Characteristics

    Nov 22, 2023 · Learn about mammals. Discover their characteristics, get examples, and learn about different orders of mammals.

  4. Mammals - National Geographic Kids

    Mammals include humans and all other animals that are warm-blooded vertebrates (vertebrates have backbones) with hair. They feed their young with milk and have a more well-developed …

  5. Mammals - Definition, Types, List, Characteristics, and Pictures

    Dec 31, 2025 · What are mammals with examples. Where do they live. Learn about their classification, evolution, lifespan, reproduction, and adaptations with images.

  6. Mammals - National Wildlife Federation

    Explore facts and photos about mammals found in the United States. Learn about their range, habitat, diet, life history, and more.

  7. What is a Mammal? | manoa.hawaii.edu/ExploringOurFluidEarth

    Mammals are a diverse group of animals that includes between 5,000 and 5,500 species adapted to live in a wide variety of environments. The vast majority of mammal species live on land, …

  8. The 10 Most Important Mammal Facts - ThoughtCo

    May 13, 2025 · Mammals are unique in nurturing their young with milk through specialized glands or patches. Mammals have adapted to live in diverse environments, from oceans to deserts …

  9. Mammals | San Diego Zoo Animals & Plants

    Mammals are vertebrate animals that are endothermic, have hair on their bodies, and produce milk to feed their babies. Many mammals give birth to live young that are small and helpless.

  10. Kenneth E. Behring Family Hall of Mammals

    Mammals, of course! Posed from the floor to the ceiling, the animals in this exhibition range from the familiar Eastern gray squirrel to the rare okapi, a central African mammal so shy scientists …