Hi, can I ask why you do not want to get a Doby......any dog , introduced as a puppy can cause stress to an older dog, why should a Doberman be any worse? I had a Doberman and it was one of the best dogs I ever had....easy to train, great companion and fitted in well with exsisting pets. I think is it is up to you as an owner to nurture the relationships between your pets.....I should know.....have just introduced a mad kitten into my house, which already contains 4 dogs, a parrot and 2 Degus [and now the kids want another kitten :o( :o)!!!]
Good luck with whatever you decide.
Lisa x