Every dog owner knows that your bed isn't really your bed anymore. The moment you invite your pup up for "just a few minutes," you've unknowingly signed an unwritten agreement that they now have equal—or greater—claim to the mattress. If you're one who shares a bed with your furry friend, you know there are a few unspoken universal rules. Rule #1: The Biggest Bed Belongs to the Smallest Dog Own a Chihuahua? Congratulations—you're now sleeping on the outer three inches of a ki
