The most famous grumpy cat in the world stars in a Christmas special music video called “It’s Hard to Be a Cat at Christmas”, made by Purina Friskies. And guess what! Grumpy Cat is not alone, but with Colonel Meow, Nala Cat, Oskar the Blind Cat and Hamilton the Hipster Cat. For each view count the company donates a can of wet cat food to cats in need, for the first 500.000 views. So enjoy the music video and make a good deed.