We're back, and you called it....constipated. Vet took a complimentary xray of his lungs, does have small tumors but nothing that's going to be a problem in the short term. Removed a 3 inch poo ball and gave an enema, he's got some more in there that needs to go and hopefully it will so he doesn't have to go back to the vet tomorrow. He has to be on a high fiber diet, so at least I found a use for that w/d crap! Fingers crossed, but hopefully all "goes" well and we get some more time with him.