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Mammals are a clade of endothermic amniotes distinguished from reptiles and birds by the possession of hair, three middle ear bones, mammary glands, and a neocortex. The mammalian brain regulates the body temperature and the circulatory system, including the four-chambered heart.

OrdersEdit

  1. Afrosoricida
  2. Artiodactyla
  3. Carnivora
  4. Cetacea
  5. Chiroptera
  6. Cingulata
  7. Dermoptera
  8. Erinaceomorpha
  9. Hyracoidea
  10. Lagomorpha
  11. Macroscelidea
  12. Perissodactyla
  13. Pholidota
  14. Pilosa
  15. Primates
  16. Proboscidea
  17. Rodentia
  18. Scandentia
  19. Sirenia
  20. Soricomorpha
  21. Tubulidentata