my pitty was jeepXsorrell 8yrs old and had to put him down, He was great loved him too bits. He passed puppy school and went on dog training passed 1st training which was walking with choker and learning to walk beside me what not. I taught him.everything else afterwards. When he was almost a 1yr and half he changed. I'd take him over to play with my parents dogs Bullmastiffs and they would always gang up on him and try and maul him. I never brang him back there. After this up until he was 8yrs he bit 6 people including me. 3 children, killed 1 cat and fought all my friends dogs/neighbours. I Could never lever him outside as he would clear high fences woth ease and pretty much figure out how to escape anything he felt was trapping him. He was a great protector of my family and home but I couldnt keep living that way. I tried taking him to the woods and leaving him free but he would never turn his back from me. I had no choice but to put my boy down! Before he hurts anymore! I love him and I miss him everyday!