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] mating]] | |||
In ], '''mating''' is the pairing of opposite-] or ] ] ]s for copulation and, in ]s, also to raise their ]. Mating methods include ], ], ], or a ]. | |||
In some birds, for example, it includes ]-building and ]ing offspring. The human practice of making ] animals mate and of ] them is part of ]. | |||
'''Copulation''' is the union of the ]s of two ] animals for ] and subsequent ]. The two individuals may be of opposite sexes or ], as is the case with, for example, ]s. | |||
Animals initially lived only in water and reproduced by ] in the water. Certain animals started migrating from oceans to the land during the ] epoch about 450 million years ago, necessitating internal fertilization to maintain ]s in a liquid medium. | |||
In ]s, the male uses its ] to deposit a capsule of ], called a '']'', into the female's ]. | |||
Many other animals reproduce sexually with external fertilization, including many ] ]s. Many vertebrates (such as ]s and most ]s) reproduce with internal fertilization through ]l copulation (see also ]), while ]s copulate ]lly. | |||
In ]s, unlike most animals, copulation may or may not be related to reproduction. In most cases people copulate for pleasure; this behaviour is also seen in some animal species, for example ]s are known to copulate when the female is not fertile, presumably for pleasure, which in turn strengthens social bonds. See also ] and ]. | |||
==See also== | ==See also== | ||
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==External links== | |||
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<gallery> | |||
Image:Lion_sex.jpg|A pair of ] copulating in the ], ] | |||
Image:DirkvdM love-bugs.jpg|]s mating | |||
Image:Testudo_Marginata.jpg|] mating | |||
Image:Elephant_Sex.jpg|] mating | |||
Image:Green darner mating med.jpg|] mating | |||
Image:DirkvdM copulating black butterflies.jpg|] mating | |||
Image:Anthomyiidae sp. 1 (aka).jpg|] flies mating | |||
</gallery> | |||
] | ] |
Revision as of 13:00, 11 July 2007
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