Hi all. I have a problem with my 10 weeks old apbt puppy, Peanut. He is with me a little over 2 weeks and he is my first trully own dog and first pitt bull. I am trying to raise him as good as I can, I was preparing for this puppy long time, knowing that breed is not the easiest. I am socializing my pup every day (even got a schedule), he is great with sounds and challenges, not really scared of anything pretty much, which is great, but... exactly. BUT. That kinda freaks me out. But let me start from the beginning. I decided to use only positive reinforcement, never really yell or hit or even push my pup, not really punish him. Of course, like every puppy, he loves to bite and grawl while playing, I am handling him and dealing with that. He is good with other people, but not really very excited with them. Sometimes he is barking but most likely I treat that as invitation to play, if he gets too rough I simple walk away and it works. But I made one mistake during the all process of socialization, and I am scared that it can have influence at all of my dog's life. So, couple days after we got Peanut we decided to visit my friend's house to socialize Peanut with other place, people and dog. They got a young female bulldog mix that is very overwhelming with everybody and anything, but really sweet and harmness. She recently lost one of her back legs, but doing great. We introduced them to each other, but Georgia got so excited, that things got out of control. She started licking the puppy, tapping him with her paw and knocking him down, Puppy was not scared at all, tail up, chest to the front. He got very agressive towards her, bit her and grawled very loud. Since then, he hates her. And he attacks any kind of other dogs. We tried with puppies, big dogs (harmness), smaller. Peanut is bullying all of them. All I want to ask is why is he doing that and if it's possible that he is going to forget about what happened. The other dogs we chose for him were sweet, laying on the ground, sending CS all the times, all he was doing was barking, grawling and biling them in the mouth (they all let him, none of them bit him or grawl him back). What do you think I should do? Is it possible my dog is not going to accept no dogs at all?