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Mammals

Mammals are a group of vertebrates that includes about 21 groups such as anteaters, bats, carnivores, cetaceans, elephants, marsupials, primates, rodents and many others. There are about 5,400 species of mammals alive today. Mammals first appeared about 200 million years ago during the Jurassic Period. The articles listed below provide information about the characteristics, classification and evolution of mammals.
  1. Aardvark (0)
  2. Anteaters (1)
  3. Bats (2)
  4. Carnivores (32)
  5. Cetaceans (8)
  6. Elephant Shrews (0)
  7. Elephants (8)
  8. Flying Lemurs (0)
  9. Hoofed Mammals - Even-Toed (10)
  10. Hoofed Mammals - Odd-Toed (8)
  11. Hyraxes (0)
  12. Hares, Rabbits and Pikas (3)
  13. Insectivores (1)
  14. Marsupials (1)
  15. Monotremes (0)
  16. Pangolins (0)
  17. Primates (8)
  18. Rodents (5)
  19. Seals and Sea Lions (0)
  20. Sirenians (2)
  21. Tree Shrews (0)

Mammals
Mammals are a group of four-legged vertebrates that have hair, a four chambered heart and mammary glands. This profile explores basic facts about mammals including how they are classified, what they eat, where they live and the characteristics that make them different from other animal groups.

Mammal Pictures
Pictures of mammals, including mammal photos such as pronghorn, meerkats, lions, koalas, hippopotamuses, dolphins and more.

The Basic Mammal Groups
The different types of mammals are classified into 21 groups including aardvarks, bats, carnivores, cetaceans, elephants, marsupials, primates, rodents and many others. This article explores mammal classification in order to better understand their diversity and common characteristics.

A to Z List of Mammals
An A to Z list of mammal profiles available on this site, sorted alphabetically.

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