Aggressive German Shepherd Female Working Dog
I integrated my schutzhund puppy into my pack at 8 wks. I had two male collies, both unaltered and three females two spayed.
The puppy integrated well into the pack and was submissive to the dominant bitch. She did show signs of aggression at an early age.
My daughter brought over her puppy lab and she snapped when introduced. She was corrected and then for the rest of they day they played. She was in the house first and when he came in she snapped again. She was corrected and all was fine.
We visited some months later after much obedience training and she had the look but initial corrections (timing) and they ended up playing all weekend again.
She came in season at 11 months and all hell broke loose. I sneezed and she viciously attacked the dominant older bitch, biting the back of the neck and head...everytime I was able to get to release she chased and attacked again. The only way I was able to pull her off was to bite her ear and drag her away by her pinch collar.
Then, we were all in the kitchen and she attacked my elderly female ....not even stringing her up by her pinch would she release, so yes I bit her ear.
From that point she was completely isolated from the pack except for the male. She was in the sunroom and was able to open the door rushed in and attacked my youngest female. When I pulled her off the youngest one fought back (the others did not) and then my male jumped in. I was able to pull her away.
Now, I have dead bolts on every door and rotate them as best I can. Its exhausting and I'm always on guard.
She is a great working dog and I've invested a great deal of time and money training her for schutzhund. The solution of separation will require me to establish a separate area for the shepherd to eliminate or reduce the rotation when attacks can occur.
Else, if there is no hope, I will have to place her in a single dog or no do home
She has not issues at the club because dogs are not close and I am in control (no opportunity).