I have a German Shepperd, she's 10 years old and she's not neutered. This year, I bought an English Bull Terrier, he's 1 year and 1 month old, last month I neutered him. His problem before and after I neutered him was... right, he was too stubborn. He always annoyed my female dog, and now seems she had enough and probably bit him, and then he bit her too and didn't want to let go, I had to use my pepper spray. Now they're in two different places, can't get to each other, and I'm affraid that if I let them together again they'll start fighting again. What should I do? I was always trying to stop him from annoying her, but it seems it didn't work so far. He never bit anyone before, except another male dog when he was not neutered (and yes, that dog bit him first). I am very sad and don't know that to do. I assure you it is not my fault for that, I take good care of both my dogs... 