Sometimes cats will urined at some place they found strange and unfortable. or occupy the spot warning other felines. pillows and beds are not in this concern. Please check it with the vet and have a full examination.
You need to take the cat to a veteran to ensure it has no kidney problems and other health issues, nor behavior issues. A cat used to stay with multiple cats without problems and start to show this problem, it may show something changed in your home environment or the cat has physical changes, such as health conditions, thyroid problem, kidney problem, urinal tract infection.
