You've gotten great advice so far. I just want to add that in general, dogs of the opposite sex get along the best. In other words, a boy likes a girl more than he does another boy. But no matter what combination you end up choosing, make sure to have them all sterilized to ensure that they get along and don't make accidental babies. I think if a person is not a breeder, they must sterilize all their animals: Responsible Pet Ownership
