The+Dog

The **dog** ( //Canis lupus familiaris// ) Is a domesticated form of the gray golf. The dog was the first animal to be domesticated. Dogs perform many roles for people, such as herding, pulling loads, protection, assiting police and military , companionshiop , and more recently, aiding handicapped individuals. This impact on human society has given them the nickname "Man's best friend" in the western world. In 2001, there were estimated to be 400 million dogs in the world.