Hi,I have a 5 yr. old female dachshund I got her when she was 6 wks old ,and she potty trained on puppy pads and did wonderful and continued to do wonderful up until a month ago, she started pooping on furniture and in the floor.She is a super smart dog ,when she does something bad she will hide behind the sofa everytime,so that lets me know she knows it's bad but will continue to do it.She may go 2 or 3 weeks and do fine and them back to pooping every where. Help Please !!!