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Additional
Mammal
English Wikipedia - The Free Encyclopedia
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Mammal
Mammals
(
class
Mammalia
from
Latin
mamma "breast") are any members of a
clade
of
endothermic
amniotes
distinguished from
reptiles
and
birds
by the possession of a
neocortex
(a region of the brain),
hair
, three
middle ear bones
, and
mammary glands
. The mammalian brain regulates body temperature and the
circulatory system
, including the four-chambered
heart
.
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