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  1. Mammal - Wikipedia

    The basic mammalian body type is quadrupedal, with most mammals using four limbs for terrestrial locomotion; but in some, the limbs are adapted for life at sea, in the air, in trees or underground.

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

    Dec 22, 2025 · It is estimated that there are more than 5,500 living mammal species. Mammals are incredibly diverse and can be found in every major habitat. What is the biggest mammal? The …

  3. Mammals – Definition, Examples, Characteristics

    Nov 22, 2023 · Mammals are warm-blooded, hair-bearing vertebrates that produce milk. Mammals represent a diverse and fascinating class of animals, encompassing a wide range of species from …

  4. MAMMALIAN Definition & Meaning - Merriam-Webster

    The meaning of MAMMALIAN is one of the Mammalia.

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

    There are 128 known species of marine mammals. Marine mammals include whales, sirenians, pinnipeds, the marine otter, the sea otter, and the polar bear. Figure 6.3 shows some examples of …

  6. What Are the Defining Mammalian Characteristics?

    Aug 2, 2025 · From tiny shrews to colossal whales, their widespread presence sparks curiosity about what unites them. Despite vast differences in size, habitat, and lifestyle, all mammals share distinct …

  7. Mammalian - Definition, Meaning & Synonyms | Vocabulary.com

    Use the adjective mammalian to describe warm-blooded vertebrates with hair, or anything related to them. Your sister might be fond of snakes and frogs, while you'd prefer a mammalian pet, like a dog …

  8. Evolution of mammals - Wikipedia

    The evolution of mammals has passed through many stages since the first appearance of their synapsid ancestors in the Pennsylvanian sub-period of the late Carboniferous period. By the mid- Triassic, …

  9. Mammal - Evolution, Classification, Adaptations | Britannica

    Dec 22, 2025 · The most common remains of mammals are teeth and the associated bones of the jaw and skull. Enamel covering the typical mammalian tooth is composed of prismatic rods of crystalline …

  10. Mammals - Biological Diversity

    Mammals are warm-blooded vertebrates with sweat glands, hair, three middle ear bones and a neocortex region in the brain. Their gradual evolution from mammal-like “reptiles” called “synapsids” …