I have 3 boxers, a 6 yr old female, 4 yr old female (the older one pup) and a 3 yr old male rescue.
My problem is the 4 yr old since we moved is attacking the 6yr old and now the 3 yr old male. We keep them separate but it is not easy. We can break up fights with the females since the 6 yr old is small, but the fights between the female and male are awful. They are both big and strong and ends with lots of cuts.
A friend recommended a shock for the 4 yr old. I really have problems with this, but my only other hope is building a yard just for her. They act like they want to play but I worry that a fight will happen.
Any advise???