I just got a new dog from a shelter yesterday. A two year old cattle mix. She was very outgoing and happy at the shelter and didnt seem to have any problems being outside. When i went to get her from the shelter she was terrified and she was shaking like a leaf. Once home she seemed scared but okay. She is very affectionate and very friendly. The problem is she is terrified to go outside. She flatens to the ground inside and refuses to move. Even using treats as a lure. I have to pick her up and bring her outside and even then after a minute or two she desperatly tries to get back inside. Once again flatening to the ground or lunging to the door. Its been over 24 hours. And she hasnt gone to the bathroom. She is eating and drinking a little bit. Any suggestions would be appriciated.