Seishi, aka Mr. Bingley, has a delicate tummy. He declines people food, but will eat tinsel, string, anything he shouldn’t. And will return you anything he liked yesterday but which nauseates him today.
Mr. Darcy, aka The Night Fury, aka Shu, will eat anything BUT people food. Unless it’s cake. And plastic bags. But he has a cast iron stomach and almost never returns anything. Shu tends to get fat—and Sei doesn’t.

So…after trying absolutely everything, I think I’ve got at least the longest-running answer yet. Sheba makes little packets of two individual portions. I break them apart, one salmon, one fish. I take the covers off, I offer both to Sei and feed him whichever one he goes for. I feed the other to Shu, who eats anything. We have now had two weeks with Sei not returning me his dinner, no matter which one he gets.

Am I a sucker? Oh, yes. Absolutely. And we still have to keep plastic bags out of Shu’s reach. Turns out they use fish-oil somewhere in the manufacture, according to legend, and he’s not the only cat.

Well, I’ve ordered some fish-oil tonic for Mr. Shu and we’ll see if we can have sanity around here.