What can you guys tell me...here's the scoop... He is now 2 years old and lives outside 100% of the time with a german shepherd female who will be 10 this year and my giant schnauzer who is now 3. I have noticed two behavior changes in the past month or two - 1. He's overly-playful and rough with the shepherd who is the alpha dog. She puts up with him for a while and then snaps at him until he backs off. 2. He's started to get food agressive with my GS and they fight at least once a week. I'm talking fight. They are a 100% even match - both about 100 lbs, both about 27 inches, both with thick fur so no one "really" gets hurt. But my GS is very sensitive and he goes into a funk when these fights happen. He was severely abused as a puppy and violence makes him shut down. Do you think the LGD is trying to take over alpha position because of the age of my shepherd? My GS has no interest in being alpha dog but yet, he has no interest in bowing down to the LGD either. When they fight - and it is only for like 20-30 seconds, it is like something out of Call of the Wild. Any advice? I don't want to entertain negative thoughts, but I can't have two giant dogs fighting all the time.