Can and should this behavior be changed?

Tweet

Good Morning all :) I have a question about our 3 year old Saint, Hanna Belle. She is a fantastic loving, fun, great, loyal part of our family. The problem we are having is developing from her loyalty to all of us. She has always been very protective of me, my husband, and our children but for the last six months or so she has started showing aggression to every person that comes to our home. She has never bitten anyone but she will growl and put herself between us and whoever it is that came over. A couple of times she has lunged at someone and "hit" them with her head,almost like a headbutt to push them away from us. We have to put her in another room when someone comes over for the whole they're here. She barks and whines the whole time, making herself and us miserable. We make sure she has food,water, her favorite toy and blanket in there with her but nothing does any good because she just wants to be around us. Even when someone else isn't here and she had full access to the whole house, if one of us goes into our bedroom and closes the door she lays in front of it and whines, even if the rest of us are in the rest of the house for her to be with. She doesn't like to be outside by herself but if we are outside with her she will stay out all day. I love the fact that she loves us so much, as we love her just as much, but I really need some advice on what to do about this. I can't lock her away and have her bark all the time. And I also need to know if there is something we can do about what I view as separation anxiety. She is not left home a lot by herself. My husband works full time but I only work 3 days a week and am only gone 4-6 hours. If anyone has any advice....please help...... :) Sorry this is so long, thanks for taking the time to read it and thanks for any help:)