I bought a 4 month male doberman at the same time as my brother bought a male beagle puppy for his girlfriend that also lives with us. Ever since the beginning they have also played too rough in the house. Even though we know they are just playing, they have gotten extremely out of hand sometimes. Due to the instigating nature of the beagle and the massive size advantage of bowser, we must keep the dogs apart. After 8 months nothing has changed, they act as if they haven't lived with each other before. Has anyone had this type of problem before and is there anything i can do to make these dogs accept each other.