My two also have runny poo on and off over the last few weeks.
And the boy threw up bile once last Monday.
I think there might be something going around, you know?
Even on a plain diet, they're not very solid at all.
Do you groom your cat every day this time of year, to remove the loose winter undercoat?
Moshi needs brushing every day at the moment, so he doesn't ingest too much hair.
Yuki doesn't have an undercoat, as she's an African originating cat.