Thanks for the advice, Quaker. It's something I had not even considered.
I was going to take the boy to the animal ER this morning, but he seems to have made a near-full recovery.
He's gone through these sorts of episodes two other times before, and the vets then weren't able to come up with a cause.
This time it just seemed worse, and he had me seriously worried. But, he's back to near-normal activity levels so I don't know what to do.
Rest assured I have filed your idea in the old mental Rolodex (anybody even know what those things are anymore?). And I do appreciate the thought.
Crusader