Are these a good or bad group of dogs to have? How hard to get them to be good and obey me? How hard to get to not fight? What to do as an owner to get them to behave and be good dogs individually and as a group? What to do if the pitbull disobeys me as a pup spank him yell at him etc? What should I do as an owner to get them all to grow up and be very nice and obeying dogs? Thanks so much guys!!!