Aggressive Australian Shepherd
I trained both of these dogs from a young age. Both were at least part Australian Shepherd and both were rescue dogs. The first one became aggressive towards children. she was great with cats, Dogs and adults. But when she was 7 she attacked a child on his tricycle and bit him on his back. With great sorrow,I had the dog put down.
About a year later someone dumped another Aussie in the neighborhood. She was about 10 weeks old and I adopted her. I was more careful in her training and she was doing fine. When she was 2 a collie was dumped in the neighborhood but she went unadopted for 6 months. I finally took her in, but she had become "predatory" by then in order to survive. Then, even though we fed her daily, groomed her and got her medical and dental care she continued to kill small animals in the area. My Aussie began to pick up these habits and although I have tried to stop this behavior, it has continued. She has attacked and/or killed squirrels, cats, chickens and small dogs. A couple days ago she attacked and killed two pigs and a goat. We are going to try to rehome her, but since she is so predatory I'm afraid we may have no luck in removing and may be forced to put her down also.