We've got an 18 month old neutered male who we've had for just over a year. In the last month he's suddenly started spraying after never giving us any problems in that direction before and I'm at a loss to think of reasons. Nothing's changed in his life in that period, and he has constant access to his litter tray. The spraying is a mixture of furtive and incredibly brazen - he's just attacked the spare room bed while I was in there, looking me straight in the eye!
He was 6 months old when we got him from the CPL and they think he might have been neutered quite late (they didn't do it) - could that have anything to do with it? I'd be grateful for any thoughts on possible causes and/or courses of action - my gut instinct is to start with the vet but I'd be interested to know what you guys think.