Twelve year old cat has always been reliable at going to the toilet in a litter tray or outside. However, this year there have been several incidents where he has been indoors (mainly had a wee).
He doesn’t have a uti or any other obvious reason. He has mild arthritis but has done for years and the vet says it’s around 2 out of ten. It’s at different times of the day and different weather - he had no issues going outside in the recent storms but not this afternoon when it was relatively mild out.
Any suggestions?