BooBoo Sitting Pretty

It's been over a week since BooBoo's emergency hospitalization. Now tell me, does this look like a cat who's on the brink of death? I think not. He's getting around pretty much normally, eating and drinking normally, and (we presume) doing his business regularly (it's hard to tell with indoor/outdoor cats). There hasn't even been a personality change, like can sometimes happen when an animal has a traumatic event. He's still our boy.