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animal (anīĭ-mәl) a living organism having sensation and the power of voluntary movement and requiring for its existence oxygen and organic food; animals comprise one of the five kingdoms in the most widely used classification of living organisms. any member of the animal kingdom other than a human being. of or pertaining to such an organism. control animal
an untreated animal otherwise identical in all respects to one that is used for purposes of experiment; used for checking
results of treatment.
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