I have an 8 month old pitbull and a 6 month old German Shepherd. I had the shepherd for about a month before I got the pitbull, and now the shepherd is getting more and more aggressive. She hasn't crossed any lines yet, but I'm attentive and notice that she's a bit more aggressive in the house, and last night at the dog park she was clearly more aggressive with another dog there. I feel it might be because she's sharing attention in the house, she's making sure no one outside of the house hones in on any more of her territory. If anyone has ANY ideas, please let me know. And any suggestions on how to fix this are GREATLY appreciated!!

Well when you say aggressive do you mean aggressive or dominant?

i'm a bit confused about what you really want to say!

example: we were at the dog park and my two dogs were playing with one other dog. nothing out of the ordinary happened and my shepherd lunged aggressively at the other dog. I have not seen her aggressive like that before, and I know that it wasn't ENTIRELY crazed, but it certainly wasn't entirely play, either.

I'm wondering what I can do to correct this kind of behavior.

thanks!

Hmm hard to say if that is dominance or aggression. My dog is very dominant and vocal at the park but not really aggressive. This makes him get very hyper and he starts trying to pin the dog, he just gets rough. When this happens I roll him on his back and keep him there for a minute to make him be submissive. You could try that as soon as your dog shows signs of aggression.