While we love our Doberman passionately, and have had Dobes before, this is not a breed for a home consisting of many pets. They're definitely people oriented and tend to be territorial and protective.
Ours comes off downright ferocious with strangers, and once aforementioned stranger is approved she wants ALL the attention and all the "loves". She can be obnoxiously persistent about this, so we've had to be strict with her.
We got her as a watch-dog, primarily, and she's, of course, excellent at her job. Dobermans also tend to be almost scary-smart, with a really fun sense of doggy type humor....