I mentioned that I have two dogs...Addie is a 3 yr. old husky mix, Hammie is a 5 mo. old German Shepard. Everything has been wonderful..until yesterday. I live in a very rural area and Addie seemed to love a new friend. They played and really enjoyed each other. I understand they will have 'off' days...but yesterday Addie became very, very aggressive...to the point of which I'd never seen toward Hammie. She seems to not want him anywhere near her. I've been very careful to not favor one over the other (hey, I've got grown children..know all about that) This just happened so suddenly..it seems bizarre. They have a fenced pen that is 20' by 32'....and I can't even put Hammie in without her becoming extremely mean...I mean to the point that someone is going to get hurt. Addie is female, spayed...Hammie a male...I thought that would be a better mix..was I wrong? I've kept Hammie in the house to avoid the conflict. I guess I just don't understand what happened???? Everything was so good. Perhaps it is because he is getter so much bigger..an alpha dog thing?? Seems the more he grows, the worse she gets. She so loved him as a puppy. I thought that two dogs would be companions.........HELP, please!! Thoughts?? Ideas?? What happened?? oops...see some typos....guess my brain works faster than my fingers!