[[Image:Vermeer The milkmaid.jpg|thumb|right|250px|[[Vermeer|Vermeer's]] ''Milkmaid'' (1658-1660)]]
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'''Milk''' is a nutritious [[liquid]] [[secretion|secreted]] by the [[mammary glands]] of [[gender|female]] [[mammal]]s to nurture their young.
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In addition to [[breastfeeding|feeding]] their own [[infancy|babies]] with their own milk, humans have [[domestication|domesticated]] several animals, whose milk they use as a [[food]] source. Foremost among them is the cow; much less common are the [[sheep]], the [[goat]], and the [[llama]].
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Milk is the basis for the production of numerous foodstuffs, including [[cheese]], [[yogurt]], [[cream]], [[quark (food)|quark]], [[kefir]], [[ayran]], [[butter]] and [[creme fraiche]].