My 7 year old lab has suddenly taken up the habit of doing her "business" (both kinds) in the same exact spot of our tiled TV room. She's never had a problem before( in her whole life she had only soiled herself one, on her first day home), but now this has been going off and on for a few months. It has become even more frequent of late. Her diet has not changed, no furniture was moved, and I have thoroughly cleaned the spot (as I've read the smell can make dogs do it in the same spot over and over again). If anyone has any help or information on why this is happening or how I can fix this problem, it would be much appreciated.