I don't know. I got Slipper in December 2011 but after I split with my ex in July 2012, I didn't see him for a year as I was in a teeny tiny flat and had no room for him. Then I moved into this house and got Slipper back in July 2013. I thought he'd remember me, but he seemed unsettled and didn't eat his dinner that evening which is most unlike Slipper! So maybe he didn't
I'd missed him and hoped he'd remembered me, but evidentally not