well im not much of knowing about agressive dogs but you could try these aren’t my tips but there someones lol
All dogs fight at some time or another when confronting each other or even at play when things get a little aggressive. Wayne Hunthausen, D.V.M., an animal behavior consultant in Westwood, Kansas, and also president of the American Veterinary Society of Animal Behavior, says that fighting amongst dogs, while scary to us and harmful to the combatants, is extremely common.
There are many ways to stop these battles or even prevent them all together with proper supervision and a few training techniques. Here are some basic tips to keep your dogs from fighting and hurting each other more than they have to
1. Stop the action in a deep LOUD voice. When you see the fighting about to start between your dog an another or if you catch the battle in the beginning stages; then interrupt the scene with an extremely aggressive ?NO!?. Your pet will take this loud thunderous command more seriously than if it where a lighter command call. Trust me, your dog will recognize when its owner means business!
2. If there is severe fighting for a prolonged time, then use a blanket if need be to grab your dog. This move is a last resort if the fighting between your dog and another has gone on too long and you want to stop your dog from being hurt even further. Throw a big object like a blanket in top of the combatants and then grab your dog. Be extremely careful! Many dog owners have been accidentally mauled by the biting dogs, as they do not pay attention to what they are biting when all wired up from the aggression.
3. Have your dog meet other strange dogs ahead of time. In other words, plan get togethers with your friends and their pets in which both animals will be leashed and you can control them while they learn that strange dogs are not always hostile. This is a conditioning strategy that works very well in the long run and keeps your dog from being unnecessarily threatened by dogs or other animals that it does not know.
hope they work=]

You know the answer already: get them spayed. Not just ASAP . . . tomorrow. This week at least.
Dogs typically come into heat at 6-9 months of age. With the dominant dog now gone, the females are fighting for the alpha position now that their hormones have come into full swing.
The faster you get them both spayed the easier controlling this now-developed aggression will be, but the longer their hormones are allowed to develop the more ingrained their territoriality and aggression habits will become.

Hi Crimson Moon… the situation will DEFINITELY help once they are both spayed, that’s the bulk of the problem. After a week of their surgery, you will notice a growing calm affect on them every day. Their hormones make them anxious, and they become territorial. Another thing that will help, other than letting them run around your back yard (unless you have a lot of land), is taking them for a walk on a daily basis for mind stimulation, to help exert excess energy they have built up inside them. They will feel "satisfied" and will become tired. If you could establish a "routine or schedule", the dogs will have structure too.
A great tv show you should consider watching on Animal Planet is called "It’s Me Or The Dog". Victoria Stilwell is the dog trainer, and her communicative skills with dogs are amazing (I like them better than the Dog Wisperer). It’s about families who have all types of dog behavioral problems, and within one day she corrects the problem/s. Then the families continue with the communicative skills for two weeks with their dog/s, and Victoria then comes back two weeks later, and the dogs are very well mannered. She rescues many families that are in your position. Once you find the solution on how to correct their behaviors, it will be fine. Just try to tough it out until then; I’m sure it’s frustrating, but don’t give up hope. Check out the link below, and please let us know how things progress!