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A mammal (from Latin mamma 'breast') is a vertebrate animal of the class Mammalia (/ m ə ˈ m eɪ l i. ə /). Mammals are characterized by the presence of milk-producing mammary glands for feeding their young, a neocortex region of the brain, fur or hair, and three middle ear bones.
29 de abr. de 2024 · Learn about mammals, the vertebrates that nourish their young with milk and have hair, a hinged lower jaw, and a muscular diaphragm. Explore the diversity, evolution, and distribution of more than 5,500 living species of mammals in 27–29 orders.
Learn about the diversity, adaptability, and evolution of mammals, the most adaptable animals on the planet. Explore photos, videos, and stories of mammals from every continent and ocean, from bats to whales.
Mammalia. Los mamíferos ( Mammalia) son una clase de animales vertebrados amniotas homeotermos (de sangre caliente) que poseen glándulas mamarias productoras de leche con las que alimentan a las crías. La gran mayoría de este grupo son vivíparos (con la excepción de los monotremas: ornitorrinco y equidnas ).
Learn about mammals, the warm-blooded vertebrates with hair that feed their young with milk. Explore facts and photos of different types of mammals, from aardvarks to zebras.
Learn what makes a mammal a mammal, how they evolved, and how they adapt to different environments. Explore the diversity of mammals, from bats and shrews to whales and primates, with Britannica's articles and summaries.
Mammal - Evolution, Classification, Adaptations: Mammals were derived during the Triassic Period from therapsids. Many of the attributes that evolved are correlated with their highly active habits—for example, efficient circulation with a four-chambered heart, hair for insulation, endothermy (warm-bloodedness), and improved mechanics in ...
