Have you seen a dog fight before? If you do then you know that dogs don't rip each other to shreads. A canine's teeth aren't sharp enough to tear meat like a great white. Its too dull for that and plus the skin is too flexible to easily get teared. Most dog fights end with the loser being exahusted enough he can barely fight or the owner says its enough. It costs thousands to prepare a fighring dog, I doubt the owner would throw away his cash he invested into like that.