Are Moscow Watchdog and Plummer Terrier both breeds of dog?
Plummer Terrier The Plummer Terrier is a working terrier, and like all working terriers, it is a composite animal.
Police dog A police dog, known in some English-speaking countries as a "K-9" or "K9" (a homophone of "canine"), is a dog that is specifically trained to assist police and other law-enforcement personnel. Their duties include: searching for drugs and explosives, locating missing people, finding crime scene evidence, and protecting their handlers. Police dogs must remember several verbal cues and hand gestures. The most commonly used breeds are the German Shepherd, Belgian Malinois and Rottweiler.