Thanks for the follow-up! Rambo is doing so very well! We had only one time where he tried to mark in the house and it was the first night we brought him home but he had a belly band on. After that we started to take off the belly band to see how he would do and he has not marked in the house yet! We have a doggy door so he comes and goes as he pleases to the back yard, he plays with our other rescue Bentley all day and even into the evening and  they seem like bonded brothers already lots of cuddling and happiness so far. No barking, no nipping, he has only barked when he heard something in the back yard. We are so very happy to have found Rambo as he seems to act as if he has been part of our family forever. Thank you so much for keeping in contact. Included I have attached some pictures of Rambo and Bentley!