I have a 1 year old doberman. She becomes VERY aggressive and possesive when she has something she knows she is not suppose to have. For instance if she is chewing a toy and is starting to pull the stuffing out she knows she is not suppose to have that so she guards it and if you go near she shows her teeth and growls.
Tonite I was out of the room and she had a piece of a rawhide chew and was guarding it I did not know she had it so when I went into the room she became VERY aggessive showing her teeth and snarling at me because she was guarding it.
I responded with a chair between us and using a water squirt bottle and replying NO. However it was very scary..
What should I do to prevent this agressive behavior.