All Ziggy's tests (thyroid, kidney function, x-rays) came back oky-doky. So, his problems are probably due to the sensitive stomach of a senior kitteh. This is good because it means his condition can be managed through diet. All I need to do is figure out what to feed him.
I needed to hear this good news because right before the vet called, I was vexed. I've been working on a summer shell. I really like the yarn, the stitches, and the pattern was coming along nicely until I spotted its nearly identical twin in the Ravelry database.
Now, all I have to do is figure out a new design.