Congratulations, I am so happy for both of you and for Chipper. He is gorgeous, and I am sure he will soon learn that he has just landed in doggie heaven. As to the peeing, my best guess is that it is actually marking. He needs to be corrected and taught that it is your house, not his. I used to foster most of the fosters would pee in the house the first day or two. I think you will be able to quickly teach him otherwise. I think the sitting at the door is more of a not realizing he belongs there yet, and as night comes he wants to go out and find his "safe spot." Little does he know that he never has to do that again.