Snickers will be one at the end of this month & has always been good at going to the bathroom where he is supposed to (litter box) until the last couple of weeks.
So......is he just marking?? or is it common for a relapse at this age? I did a search trying to find out if marking will stop if I get him neutered...but I need more input please

If he's already started marking is it too late for neutering to help?