Hi, I’m a new member here and I have a serious problem and I need urgent advice. I have a 7 year old non-spayed female German Shepherd who I’ve raised since she was 7 weeks old and has killed 2 small dogs. As ironic as it sounds, she was raised with a Maltese and a Yorkshire Terrier. They were grumpy but they never physically bullied her as a puppy. One thing I noticed was that she always barked at other puppies and adult dogs since she was a puppy for no absolute reason. We thought she just needed more socialization and we tried our best by taking her to puppy training classes with other dogs, completed obedience training and the dog beach. However, to this day she never snapped out of the habit of getting triggered by other dogs. The first incident was with our older Maltese (14 years old) that she was raised with ever since she was a puppy. One day as I was walking down the stairs, she all of a sudden charged at our Maltese and bit her neck and popped her jugular. She always had this thing where she had to be in control of them and got triggered every time they moved. We’ve tried to train her out of that problem but it’s impossible. We were devastated and extremely close giving up on her. Then, we thought of how we built so many memories with her so we tried to look on the bright side and decided to think of it as a freak accident (since GSD jaws are naturally very strong). However, we recently got a sheltie puppy who was just a little boy (11-12 weeks we were only capable of having him for a week). He was a happy and healthy boy that had good puppy manners. He was aware of what triggered her and knew when to calm down. I don’t know what triggered her this time, but while he was playing with a toy she all of a sudden and silently snapped at him as she did to our Maltese and bit down on his neck. His wound was exactly where our Maltese got it. He passed away yesterday as soon as it happened. A day before this incident with our sheltie puppy, she acted like she wanted to play with him and gave him her toys but when he went close to them she gave him that “come any closer I’m gonna bite” look. She’s unpredictable. Honestly, now that I think about it, I felt like she was creating a trap just so she can kill him off. Trying to lure him with her toys so she has an excuse to kill him. I’m extremely disappointed in her and I can’t help but feel disgusted. He was just a defenseless puppy. She acts nervous and fearful of other dogs outside but she kills off the dogs that are weak and defenseless or sweet to her. Does she do this because she wants to be in control and the center of attention? In addition to that, I noticed that every time my family tries to call for each other, she barks like crazy. We tried to stop her from barking too much but she never listened and always talked back. Is she secretly the alpha female and is having a power trick right now? Is this normal behavior for a GSD? Is this how they normally react to newcomers?