i have a question selzer if one bitch is clearly stronger and is dominating the fight right away and the other bitch starts begging for mercy do you find seperating the fight much easier then? then it just turns into pulling one dog off the other? A lot of fights are not an even match one wil just lay there and scream and want a human to rescue it. I think the OP first bitch is scared of his new dog. Usually it is never a even or fair fight one bitch is the clear stronger one. THe real nasty fights is when there is no stronger bitch that they can figure out and both bitches are even matched and ready to fight till death.
I have a human brain. If I was 5'2" and 120# and some Roller Derby Queen who was 6'2" and 240#, no I am not going to fight. But dogs are totally different. Sometimes how big they are means nothing. I think there is something to be said for pack order.
There are the dominant or alpha bitches who basically aren't looking to fight, who just carry themselves such that they are the queen and that is the end of it.
Then there are the beta bitches. These are the dogs that fight. They are always trying to be the top bitch, but they are not necessarily born that way. They will submit to a true alpha bitch, but if a true alpha is several years younger or just reaching maturity, they will try to hang onto their position in the pack, particularly if they currently are the alpha because the pack is small -- nasty fight.
There are bitches that are just at ease with the status quo. These bitches are not looking to fight. They are not overly submissive or overly dominant. They are probably fine in a multi-dog pack.
There are omega bitches. These are the ones that are totally submissive. I almost think that they create some of the issues. It is like they invite the bullying: "are you going to eat me?"
I think that fights happen when you have dogs that are close in power level. Two beta bitches, two alpha bitches. I think you can have fights when you have a clear distinction between dogs but you try to treat them totally equally.
Some bitches have the green gene. Some call it resource guarding, and the resource is the owner. The bitches will get along fine until the person pays attention to the Other Bitch. Then things are not good, not good at all. You can actually hear the pain in the aggressor-bitches fury as she attacks the object of the person's affection.
I love bitches. They are fun, they are easy to train, they keep me on my toes, they can be sneaky, they have LOOOOOOOONG memories. They can wait for the right time to do a thing, and then they can act fast.
If one of the bitches clearly does not want to fight, then yes, you can grab a tail and haul the other away without much trouble at all. Usually I find this mostly in adolescent bitches. In mature bitches not so much, but I have a limited pack most of whom are related in some way, so I might just not have had a truly submissive bitch that doesn't want to fight.
I think the dominant/totally submissive fights unless they are exacerbated by humans trying to force equality, are more like bullying. It can make the lesser dog even lesser but is not likely to cause a death between the dogs unless the more dominant bitch has wires crossed in her head.
The dangerous fights are between bitches who are wannabe alphas.