I have a three year old Jack Russels that continuously has house breaking problems. A friend of a friend gave her to as as his child was allergic to her. When we got her, I found out that she had never really been potty trained (she was then a year old). We worked really hard at training her and she finally "almost" got the idea. She would have accidents periodically but not often. Recently, we went on a trip and left her and our other Jack Russell (who is potty trained) at a doggie day care. Ever since then, she seems to have separation anxiety and constantly pees on the kitchen floor and tears things up when we leave. She starts shaking uncontrollably. We absolutely cannot stop her from going on the floor. Help!!!!! We are at out wits end with this dog!!!