Sheepdog
Sheepdog, type of dog bred to herd and protect sheep. The American Kennel Club lists these 9 breeds of sheepdogs: Belgian sheepdog, Briard, collie, German shepherd, Great Pyrenees, Komondor, old English sheepdog, puli, and Shetland sheepdog.
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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Serum to Singing