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M

milk – mammary gland secretions of a lactating (milk-producing) *dairy cow, *goat or sheep (or other mammal). 
milk fat – fat found in milk derived from milking eg a dairy cow. 
mohair - cloth made from the shorn hair of angora goat. 
musk – oil secreted in a gland obtained from slaughtered male musk deer as well as trapped beaver and captive civet cats. Used in perfumes.