Although marking isn't always linked with intact pets, it quite often is the case. I know fixed pets can be markers just as much as intact ones can have no marking issues. BUT often it is due to being intact. Not that spaying/neutering solves all problems, but it can help and it is healthier. It definately doesn't hurt. I know she's planning on breeding, but I just wanted to make that point because I think that is what Clara was saying.