Why do dogs get into fights at the first meet?
Because there are territory issues in between them. They are in different energy levels. They don't know about each other. So it leads to fighting. One dog fight does not make for a disaster, but your reaction to it can. Even among the seemingly closest of pack mates, sometimes something can happen that will get them going at each other. One of them doesn’t respect the other’s space and a correction turns into a conflict.
What can I do before dogs meet each other?
By bringing a new dog into another pack’s territory, you are running the risk of the existing pack becoming assertive or aggressive in order to defend what is theirs. Depending on the new dog’s energy, they may become completely submissive and fearful, or they may fight back.
Whether you’re bringing a new dog into the pack or moving in new humans with their existing pack, the procedure is the same. All of the dogs should meet in neutral territory and take a long walk together first, before coming into the home. Then, the humans enter first, followed by the dogs that live there, followed by the new dog.
Neutral territory means that the place is not familiar to your familiar dog and a new dog.
In this way, you are allowing the dogs to first bond as a pack on the walk, then allowing the dogs currently living in the home to bring the new dogs in. Just shoving a new dog in through the door is an invasion; doing it this way turns it into an invitation from the existing dogs.
The worst thing you can do if you have dogs that fight is to ignore the problem by isolating them from each other. Socialization is key for a well-balanced dog. What this actually does is create a separate territory for each dog, and fighting over territory is the only natural cause of battles between dog packs. Since the dogs will still be able to smell each other, that conflict will become an obsession. If they ever do wind up together in this situation, then they will fight.
For Good Result :
Even the most seemingly balanced dog pack may occasionally have a fight in it. The important thing to remember is that you are in charge and conflict like this is not the end of the world. Break the fight up quickly and calmly, redirect the dog’s attention, take them for a walk together, and don’t worry that it’s going to happen again.
They may or may not fight again, but if worry over it does not become your obsession, you will not be feeding them negative energy that will lead to another fight. Reward them when they are being calm and submissive, and correct them when they are not. Your dogs would prefer to not fight, and you as the pack leader can help them achieve this goal.