iF the dogs were about the same size you should have stepped back and let the dogs settle things. Dog fights for the most part look a lot worse than they realy are . Have you ever seen the way wolves settle matters on a nature channel . Looks realy bad but no serious damage is done . Its what dogs do. On the other hand, If the other dog was so agressive that it had to bite you to get to your dog I think you need to take action against the owner. I hate to see a dog put down but the owner needs to be taught a lesson. What if it had been a child with a dog that was attacked.