It's that time of year again when we unveil National Museums Liverpool's advent calendar. As always our Christmas elves (or curators, as they prefer to be known) have been working hard to find lots of treats, surprises and unusual stories to help entertain you in the build up to Christmas day. This year's advent calendar has a cat theme, with fabulous felines from our collections and exhibitions waiting for you to discover behind every door. There are some cats that sharp-eyed visitors may have spotted on display, plus a few from our lesser known collections which you might not have seen before. So get ready for Santa Claws and open our advent calendar's doors each day - you’ll be feline festive in no time! We don't want to give away any of the surprises hidden inside, so instead here is a picture of some Christmas cats that didn't make it into the advent calendar. This vintage Christmas card from our Decorative Art collection is one of the Christmas e-cards which you can use to send festive cheer for free.