I need help
I have had my gsd from the time she was 10 weeks now she is 6 mos. Her behavior is horrible. She has been labeled fearful aggressive. Only listens when treats are involved constantly barks and tries to bite ALLLL People and Animals regardless of how big small close or far. If she sees them she will lunge and try to bite. Children included. She has been through puppy training but still pulls on the leash bites and is extremely aggressive.
Some says she's playing I know better when she is being aggressive her hair on neck and back are up all her teeth are showing and she lunges. She has already bitten two dogs this was when she was a small puppy and one person this was about two weeks ago.
Is she a lost cause because I can't handle her too much longer due to her growing so rapidly. It's too difficult to do anything with her.