Found Cat spent the whole night lying beside me, alternately chirping demandingly when I stopped petting him, or popping up and scratching his head.
Found Cat has fleas. (Or maybe ear mites. I'm hoping fleas. Fleas can be gotten rid of without a trip to the vet.)
I finally gave up on the elusive thought of good sleep about ten minutes ago. Arthur sat up, scratched his head, cursed me for the grody stuff I put between his shoulderblades, cursed me even louder for stopping with the petting!, then gave up on me and found a sunbeam.
Merlin? Utterly peaceful all night. Though really angry when I put the anti-flea stuff on him.
"You'll be glad when your head starts to itch," I told him.
He just blinked sulkily and went back to staring out the window.
He's still my hero.