I had mentioned in my last thread that dixie is really sensitive and gets scared easily. When anyone comes in the house or knocks on the door she growls and barks until they come in and then she is all smiles. However, every once in a while someone will be in the house that gives her a bad vibe or something and she will go nuts if they get close to her. She doesnt try and bite but she does get pretty scary. Also, sometimes if someone approaches me in public she does the same thing. Yesterday, a homeless man started walking up to me and she went crazy. Is this normal or should I try to take her to a trainer and work on these issues?