I'm not saying it can't work but, Doberman males are known to be aggressive towards other male dogs. They can be fine for many years, living peacefully and all of a sudden, one gets angry at another over something, they get into a fight (even if it's just a minor fight) and their relationship will never be the same again. They will have many more fights in the future, almost guaranteed. I don't know of one Doberman owner or breeder who would put a male dog into just an average family home with another male just because its risky. Although, it also depends on the owner's experience. A friend of mine who breeds Dobes will put a male into a home with another male ONLY if the home has very experienced owners and would be able to handle a fight properly should it occur. She does not do this often though. People do have different opinions on this topic but I personally would never risk it, most Dobe owners that I know feel the same way...