Had my rescue cat 6 years now. He's about 11 years old. Over the last few weeks he's started weeing in the living room and I have no idea why. He's an indoor cat. Has always used a tray absolutely fine. We moved 4 months ago and he's been fine using tray in new house. Haven't changed tray or litter or location of tray. Doesn't seem in pain or unwell. Eating and drinking as normal.
What do I do??? I don't want my house to stink of cat wee!! The only thing I can think of is there's a cat that comes in the garden and stares at him through the window. Could he be marking his territory??