I just got back from the FNRttC, having left the house for 24 hours, and rather than the normal cat bouncing out the door at me, Talisker is in the kitchen looking very sorry for himself.
I've checked him over, and there's no sign of injury, but it doesn't look like he's eaten any food, or drunk any milk since I left. Oddly, he's sat with his head over the water fountain, but I haven't actually seen him drink any water.
I rang the vet up, but they're having computer problems, and are about to shut one surgery and open another, so I need to ring them back at 1pm, and I suspect I'll have to take him in then.
I wonder if he's eaten something that's upset his stomach, but on the other hand, cat's digestive systems are quite fast, and if that was the case, I would have expected that it would have cleared his system by now.
Hopefully it's something trivial like that, but he clearly isn't his normal happy self, and I don't think waiting until Monday would be a good idea.