This is one of the three that actually is willing to be petted -- the black one with the little white "dickie" that I'd dubbed "Martini". Up until recently, he was most definitely the Beta Cat to Tawny's Alpha, Spock to his Kirk, Batman to his Superman; the last few weeks, though, he's been spending more time on His Own Dread Errands.
thoughtsdriftby has bundled him up and put him in the animal carrier, and we're keeping a watch on him. If he survives the convulsions, maybe he'll be okay. Unfortunately, the usual "home free" point is around ten hours, and it's been a lot longer than that. I've checked on him a couple of times this morning, and he's still twitching, with occasional bouts of full-on seizures.
Having a dying cat in your living room is not the most cheerful way to start a morning.