Rocky Thor

This is Rocky Thor, he’s about 21 months old. He was Thor when he was adopted in November from another rescue, and became Rocky when he for his new family. Everything in his new home is perfect but unfortunately, he has decided to pick nasty fights with his big brother. These two have been inseparable since he was adopted, where one goes the other follows. However, one day that all changed and since the initial fight, the fights and severity continue to escalate. He’s potty, crate, car and leash trained. He’s amazing with family, and friends. The owner said he’s had several boxers over his life and he’s the most affectionate one he’s ever had. He tried hard to correct the behaviors but get it was unfair to his 6yo boxer to be afraid of getting attacked at every turn. The fights have been over toys, attention or food. We feel he’d be best in a home as an only dog or with a submissive female. Unknown with cats