Pitbull attack Dogs - compilation

http://en.wikipedia.org/wiki/Pit_bull
The dog is a carnivorous mammal that man has been domesticated for thousands of years. Ultimate Dog Serves man in a variety of ways: as a man hunter, shepherd and protector, and as draft animals. For the blind, dogs serve as guides. In some places, dog racing is a popular sport. Because of their loyalty, obedience, courage and kindness, the dog is often referred to as "the best friend of man."
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