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An order of hooved mammals of the subclass Eutheria (including pigs and peccaries and hippopotami and members of the suborder Ruminantia) having an even number of functional toes. 有蹄哺乳動物的一目，屬於真獸亞綱（包含豬、野豬、河馬和反芻亞目的成員），功能腳趾爲偶數。