Well, where to begin? I have 3 y/o, 110-ish pound, female Great Pyrenees, Wilson, that has never caused any trouble. Her only faults have been that she's a little too hyper sometimes, she jumps, scratches and play bites and when I tell her to stop she doesn't listen a lot of the time. she likes to bark all through the night- typical of GP's. No major problems really. She has caught a few chickens to 'protect' them, and sometimes they'll have a heart attack or something like that. When she does catch the chickens she's always dropped them when I told her, and let me take over. She's not a bad dog, and I love her to death. But,,, today my brother told me she had a chicken under the trailer, so I went out there. I saw she had a 4 m/o Guinea- dead, and she was licking it. I said something to her and she didn't really move so I took a piece of wood and knocked her with it (Not nearly any thing that would hurt her, of course, just enough to say go away) Well this is where it gets bad. She turned around with the growl she gives the other dogs who mess with her food (It's scary) and lunged at me with the intent to bite me, I think. she completely freaked out, there are words I'd like to use to describe her, but I'll say she went crazy. and at first I was acting on instinct and ran away from her, but I didn't believe that she would ever do something like that especially to me! So i went back and stood on the trailer and talked to her and put the wood back in front of her and she did it again Well I just don't know what to do. We eventually waited for her to come out and we put her in the garage and let her out after about 3 hours and she was normal. I feel like if it is my dog, there should not be a single thing that I could ever do to make her try to hurt me. But she's never done this before. I love the dog, but now I'm afraid of her and I'm not really ok with that. I'm sorry this post is so long but I wanted to include everything that could help. Any ideas? Thank you for any help!!!