by GoingPostal » Mon Apr 23, 2012 3:49 pm
Hi, welcome to the forum, they probably aren't fighting over "dominance", more likely they just don't get along or some resource, food, toys, treats, etc. Dog aggression and propensity to start fights are very common in pit bulls and it doesn't matter if the dogs were raised together or how socialized/trained they are, it's just a genetic thing and usually happens around 1-3 years old, are both dogs male? Same sex aggression is really likely, please don't leave them unsupervised ever, this isn't a good idea no matter how well the dogs get along. Often once one fight happens the dogs will be amped up and get into it easier and quicker next time, given that they are causing damage to each other and fighting a lot I would just keep them apart entirely, especially with a small child in the house you don't need her getting in the middle of that.
It's called crate/rotate, just have one dog out with you, the other dog somewhere else, either crated, in a bedroom, outside in a kennel, behind a babygate, just so they aren't directly interacting and switch them out so they are both getting time with you, enough exercise, etc. There are many people on here with dogs who do not get along and are kept apart, once you get a schedule going it's not difficult and the dogs are usually happier/less stressed without worrying about another fight.