Our 17 year old female cat is great at using the litter tray and has never really had any accidents outside of it. She was fit and healthy at her last vet check-up earlier in the year.
Today she had been playing with a new catnip toy for a few moments then suddenly stopped and did a massive wee while standing up. She looked a bit confused afterwards but then just sniffed it and walked off.
The litter tray was clean and there was nothing we could see that would deter her from using it is.
Could it be the catnip? Or is it to be expected as she gets older?