Hi everybody, I am new to this site, but I am desperate for help. Next to putting my dog down-which is the last thing I want to do-I am at a loss. This dog is a golden retriever/border collie cross. Female. Currently 9 and a half. She was never abused. Had her since she was 2 weeks old. We adopted her from a pet shelter. She listens very well. Is very well trained in all areas. From doing tricks when getting snacks to being able to herd sheep. Very good dog. Except she is violent. Very violent. We have several other dogs while we had her. We used to think she was just being territorial until she started attacking people. My brother was sitting on the couch watching tv one day and she was nuts and sunk her teeth almost to the bone in his knee. Another time she bit his face. She has bit my mother. I have a scar on my hand from when she attacked me. She bit my hand and would not let go. She is good with other people though. When we talk to people about it, they couldn't imagine her being violent because she is so friendly to people. Our other dogs have gotten beat from her. Sometimes my dog can be sleeping and she walks up and just tears into her. Just in the past two years, my dog has had her toe bit off, one front fang ripped out, stitches on her foot, four times, on the bridge of her nose. She has had multiple puncture holes on her sides, legs, underbelly. I've thought to rename her "lucky". But our golden doesn't get better. And when she fights, she does not let up. One fight, my brother really grew a pair and scooped her up, something I never would of thought to do. He picked her up off the ground and held her high while I grabbed my dog. But she had such a grip on my dogs mouth, my dog was suspended by the goldens mouth. She was off the ground by the top of her mouth because our golden doesn't quit. There is never a reason for the fights to start. Ever. She doesn't have any diseases. She's perfectly healthy. We got her checked last month and we told she would probably live to around 20 she is in such good shape. She just has a huge anger problem. My question, is what do I do? We have sedated her, she still picks half asleep fights. We have muzzeled her, she rips it off. We have to crate my dog because the golden will try to kill her through the crate, which is metal. She tries to attack her in it. She's crazy. I can't trust her. I'm actually scared to be around her because i don't know when she will attack me or anyone or anything else again. We cant take her to dog parks because she will kill any other animal there. She tries to go after people outside our fence when we let her out. Ii need help, big time. Any suggestions are welcome and much appreciated. Sorry for the long post. Just giving you insight.