There are a host of other things you can do to lower general stress in your dogs’ environment.
Exercise can be immensely helpful in minimizing overall tension. Physical activity uses up excess energy that might otherwise feed your dogs’ aggressive behaviors, (a tired dog is a well-behaved dog). Exercise also causes your dog’s body to release various chemicals, including endorphins and norepinephrine, helping to generate a feeling of well-being; an exercised dog is a happy dog! Happy dogs are simply less likely to fight.
For more details and advice on modifying dog aggression, purchase Whole Dog Journal’s ebook, Approaches to Modifying Dog Aggression.