Honestly, I thought Kingston was on deaths door this morning. He has seizures (which he's on medication for) and this morning he was lethargic, and having light spasms in his legs every minute. To and from the vet, he's got some issues with his eyes and ears which will be treated, but no clear reason for the spasms.
But now he's pretty much back to normal, and the spasms are subsiding.

And today is literally his 10th birthday!