You are a good greyhound mommy, puting your house on the market it is a huge step(IMO), as a Realtor in NH/MA, I know it can take time to attract the right buyer, but it will happen . My Sara who is 9.5 now has had problems navigating stairs and there are lots of them here, Colonial on a hill and stairs to get in from garage too. She overcame a year(2007-2008 on chemo meds, prednisone and pheanbarb from GME and I had to carry her up and down deck stairs, hard on me! I have carpeted stairs inside and treads on all stairs going out and coming in. She stands @ the top and cries sometimes until I coax her and she hates the ones that lead from deck to back fenced yard, they are open back. I bought a Chrysler Town and Country van because she could not get up into the Highlander and I still lift her back end into the van. I agree w/the thinking that it is wise to continue walking, keeping muscle tone is very important, the glucosamine helps joints, you are doing the right things! I also walk in the woods and on grass instead of pavement, it's easier on old bones. to Elsie, it is tough havin a young mind but older body!