police dog(redirected from K-9 (police))
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police dog:see German shepherdGerman shepherd,
breed of large, muscular working dog perfected in Germany at the turn of the 20th cent. It stands about 25 in. (64 cm) high at the shoulder and weighs from 60 to 85 lb (27.2–38.5 kg).
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a dog, often an Alsatian, trained to help the police, as in tracking