I have had my girl Jade since she was 5 weeks old. Shes always been very active and hyper. I didnt have any trouble house training or teching her simple commands. She has been a great family pet. I got my male when he was 6 weeks old. They have grown up together and always got a long. We just recently brought in a kitten. They both like the kitten as well. My problem is Jade turned 2 about 4 months ago. Ever since she turned 2 shes acting very bad. She wont follow simple commands that she has been following since she was a puppy. She seems more agressive than ever. When ppl come in my house I have to crate her because she narks and growls so viciously it scares everyone. She growled at my 6 year old the other day for no reason. She still gets along fine with my male and the kitten but shes scaring the heck out of me!! I have never feared any dog and I have owned 4 pits in my lifetime. She hasnt tried to bite anyone but the other day she was playing outside in our yard and one of my daughters friends came in the yard and she growled at her and chased her back out of the fence. This is not normal behavior for her. I hate to even think about putting her down but I cant live with a dog that I fear. When she growled at my daughter it almost caused a big problem because my male got up and I thought he would attach her. Shew I havent ever seen this happen and I have worried myself sick over this. Can anyone please tell me what to do? I am so confused.