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Police with different breeds of dogs marching. A police dog, often referred to as a K-9 (which is a homophone of canine) 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. Trained dog video
Police with different breeds of dogs marching. A police dog, often referred to as a K-9 (which is a homophone of canine) 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.