In dodgers ob class there's these two women who own a bully breed, ones a staffie and the others an American pit bull terrier. These ladies are super nice, but a little naive. Adrian (the aptt) is dog aggressive, she constantly whines and has gone after a few other dogs in the class, thankfully not dodger. Bella two dogs got in to it in dodgers class last night. the staffie is pretty easy going for the most part, but I can see in certain situations were she can be DA. Last night my neighbor and I went early to work our dogs and to get them ready for work. Bella and her mom come and start working. I'm standing next to my neighbor talking when all of a sudden I see Adrian loose. I'm thinking **** this isn't good, protect dodger and Hudson (my neighbors dog). Adriana owner is calling her and she's not listening. Adrian goes over to Bella way too excited, they did good for a minute then it happens, they get into a fight. I threw dodgers leash at my neighbor, he behaved like a good boy sat for her and everything. The bellas mom yelling and trying to pull Bella away. I ran over grabbed Adrian by the scruff of her neck and held her up off her front feet while telling bellas mom to do the same and held them until they let go. After we got them apart I checked each one for injuries suggested they take them to the vet. This never would have happened if Adrians mom had left her leash on her while they were in the car. Yes it was a accident, but it could have been prevented.