No offense to dog owners (or cat owners for that matter) but when we purchased our home in 2002, one of the stipulations with our realator was that we did not want to buy a house that had previously had pets living in it. The houses we were looking at, were all specs, or one owner homes, all built within the last 2 years or less. We have no animals. I don't want to live in a home that had animals for several reasons. Main reason, animals are gross, especially if they weren't/ aren't your animals. The hair, the urine, the crap, the slobber, all of it grosses me out and I want nothing to do with it in my personal living space. Sure, it can all be cleaned, but it is not 100% clean no matter what anyone tries to tell me.