Trish, I am so sorry. I can't imagine what you went through, and thanks for sharing your tragic experience with us. When I was growing up, we always had multiple boxers. When I received Ruckus (now 12 years old) for a christmas present, he was our 3rd boxer. We already had one other male (neutered later in life) and a female, which my parents did breed. The only time we had any problems was when our female would go into heat. I'm also getting ready to add a male "foster boxer" to my flock. I do realize that it's very hard to give all the attention needed when there is a crowd, but with fostering and also with your shelter rescue, I almost want to say their situation is so severly tragic, that my love to them and the attention they will receive has got to be an improvement to where they are now. I would however, suggest that you educate yourself on dog fights. There are some very graphic but necessary websites that can help you just to be prepared in case of the worst.