Rudy (our red Merle rescue) is down in his back. He started limping 2 days ago and yesterday had trouble getting up steps. Today he can lift his front but has a great deal of difficulty getting his butt up. I carried him out this morning to do his business and he has not moved from the spot I set him down in. I have given him some aspirin and that seems to help the pain some. I have never had to deal with this before - any suggestions on how to make him more comfortable till we can get him to the vet tomorrow would be greatly appreciated.