Hi my name is chris. we adopted our first french mastiff 1 year ago she was 5 weeks old when we got her. I have had bullmastiff's since I was 5, so lets just say I have over 30 years experience with them. I have had an english mastiff which was my soulmate, she was awesome and was with us for 10 years before cancer took her from us. I have a lot of experience with the mastiff breeds and didn't think french would be that big of a difference. I had done some research on the breed but felt like I could handle it. I am doubting it now as the french mastiff is a handful to say the least. I am really looking for help with her, and trying to train her. She is terrorizing the 5 pound mutt we have and the 110 pound bullmastiff who is 2 years old. I tried to let them work it out on their own but the fights are getting more intense and more frequent. I can't let her pick on the little guy for obvious reason but she is driving me crazy. I have tried training her, I give her tons of toys, walk her alone and walk the three together, but she just keeps going into the danger zone. She is 13 months old now, I had her fixed hoping to kill the mood swings, there is not one thing that sets her off it just seems random. I am desperate to regain control and peace in my house. Looking for any help or suggestions please.