I have 7 molosser's currently. 2-around males 3 mths, 2-7 mths (male/female), 9-yr old female, 3 yr old female, and a 2 1/2 male. I only keep seperate two females when I not in the group. I think it depends how much work you want to put into it, the breeds, and the ages as well as what ages you get the dogs at when you start the procress. But many people have packs of dogs. Sometimes you have a fight, but it depends how you work with them from there that really matters...Good Luck.