I never heard it happen until now. I no know Kyon but Rozalin disappear. First she was in her room, next I know she not.

Cats natural hunters so meat is good. But they also can eat vegetables so it not a bad thing if Shamwow start to eat grass. You could try cooking food as long as no strange spices and it served room temperature. Also, lots of water! You not want cat to die of thirst.