[Stevensondrive]

We have a 6 month old male gsd and a 1 year old wheaten terrier female. They do great together. Until we get to the park. He goes nuts if he is not right next to her. Being a terrier I do not trust her off leash. She does not come when called like the awesome gsd does. While walking them to the park a neighbor got an earfull of barks from him. I don't like that unnecessary aggression.

Is this something I should worry about or something he will grow out of?