As I said to tingler above, I knew in my gut that I was going to have to take him in ASAP, I just had to back up my brain and take a second run at it before the reality sank in. But it's nice to know that I did do the right thing, and that Greebo was lucky that I spotted him not-peeing as early as I did. He's back home now, enjoying his special diet of prescription cat food and lounging around in sunbeams. It would have been a pretty tough piece of irony to have lost him after spending so much time of late worrying about Sylvester. So, yeah, the jelly is in the right place. :)