I feel rather guilty now. After that flippant, breezy post on Monday, turns out our elderly cat is not well. Really very not well. She didn't eat on Monday or Tuesday so we took her to the vet on Wednesday. He couldn't really say what was wrong, other than that something clearly was pretty wrong. She has lost weight and condition and her fur is falling out at a rather alarming rate. He took blood tests and gave us appetite stimulant tablets to give her (I hate giving pills to cats - that forced ramming down the throat just feels wrong, even when it is being done for the best of reasons.)
The blood tests didn't show much, other than a raised white blood cell count suggestive of major inflammation of some sort, somewhere. She has been prescribed anti-inflammatory drugs (more pill-ramming) but really, she is not looking good. Sufficiently not good that Husband and I are agreed we had better make sure we are first down and into the kitchen tomorrow morning, before the boys. Just in case. And if she doesn't perk up a bit overnight, courtesy of the aforementioned pills, then.........well, we'll see.