It’s been quite a Christmas when it comes to adverts. We’ve had the tear jerking Man in the Moon by John Lewis, the hilarious Calamity Christmas with Judith Kerr’s Mog from Sainsburys, and now, Vision Direct have launched their first ever Christmas campaign, which may well be the cutest and most adorable of them all. And it is all thanks to a gorgeous little pug called Gizmo. ‘A Pug’s Christmas’ is the heartwarming story of a little boy, and his short-sighted pug, the gloriously cute Gizmo. Now, if I hadn’t already drawn you in with the fact that the star of the show is a dog, that fact that this dog…