Your pooch is an important part of the family, and he's probably your best pal, too. When it comes to the holidays, getting your dog a gift is a sweet way to show your furry friend just how much you care. Before you get a gift for your dog, you should see if there are group activities for your dog since the Christmas spirit brings dogs and their owners all together so you and your dog could make new friends! If you're not sure where to begin this holiday season, check out this list of the 13 best Christmas gifts…