7.Chihuahua

The smallest breed of toy dogs are called lap dogs for a reason. Many thrive on human companionship and love to remain close. Some take this a bit too far and will become very clingy. There are way to help a clingy Chihuahua that will benefit both dog and owner.They are much more comfortable being inside and sleep for a whole afternoon, so they’re no surprise on the list for couch potato races.