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Mammalogy

Mammalogy is the study of mammals, a class of vertebrates with characteristics such as homeothermic metabolism, fur, four-chambered hearts, and complex nervous systems.

Three major subdivisions of mammals are monotremes, marsupials and placentals. An important characteristic for classifying mammals is their dentition: this is because teeth survive the longest after an animal's death.

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Mammalogy".