There is a correct way and many incorrect ways to break up a dog fight. I urge you as a pet parent, to please, please, please learn the correct way to avoid a dog fight and the correct method to break up a fight if a fight does occur.
The best tactic is prevention and common sense. In public, always keep your dog on leash! If your dog is aggressive, I recommend against taking him to unfamiliar surroundings such as a pet store on a weekend (when adoption events are taking place).
If your dog is not good on leash, I recommend strongly against taking him to a public place until he is trained well on the leash.
Even if your dog is not aggressive, please observe the three foot rule. Maintain a minimum of three feet of separation between your dog and other dogs. I maintain more than three feet between my dog and a dog with which I am unfamiliar. When you follow this rule, the dogs do not get close enough to fight.
Please, please, please learn the proper techniques to break up a dog fight. For more information see my previous post on the subject here: http://fayettedogtrainer.blogspot.com/2013/07/what-should-i-do-if-dog-fight-starts.html .
If you need help teaching your dog to behave properly on leash please contact me. Also, please contact me if you have questions about the proper technique to use when breaking up a dog fight.
Till next time -
William Moore Canine Training