Not everyone is excited about Christmas. Plenty of people can't stand this time of year and that applies to some animals too. We can understand how cats and dogs might not enjoy being dressed up and paraded around by their humans, missing out on all the yummy food that gets eaten by us. If you're feeling a little down about the holidays then you can rely on these 15 grumpy pets who are just not feeling the holidays to make you smile. December isn't all that bad really! Take a look!