Jisho

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Noun
1. police dog; K9
Wikipedia definition
2. Police dogA police dog, often referred to as a "K-9" in some areas, is a dog that is trained specifically to assist police and other law-enforcement personnel in their work. The most commonly used breed is the German Shepherd, although now Belgian Malinois are also fairly popular dogs to use.
Read “Police dog” on English Wikipedia
Read “警察犬” on Japanese Wikipedia
Read “Police dog” on DBpedia

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