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Mammals
Title: Mammals
Category: Science & Technology
Details: Words: 660 | Pages: 2.8 (approximately 235 words/page)
Mammals
Mammal, common name applied to any warm-blooded animal
belonging to the class that includes humans and all other animals that
nourish their young with milk, that are covered with varying amounts of
hair, and that possess a muscular diaphragm. Mammals have the most
highly developed nervous systems of all animals. Most members of the
group have four appendages, usually legs. These may be adapted for use
as swimming appendages, as in seals, or as wings, …showed first 75 words of 660 total…
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…showed last 75 words of 660 total…One order was made up
of small, rodent tike mammals, having gnawing front teeth and grinding
teeth with several cusps. A second order consisted of small, carnivorous
mammals, having molar teeth equipped with three simple, cone like
cusps, that became extinct before the end of the Eocene epoch. A third
group of small insectivorous mammals are the probable ancestors of
present-day mammals. Of the mammalian subclasses that still exist,
themonotremes are unrepresented by fossil remains.
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