When you think of dog dental health problems, your thoughts might first turn to the large teeth of a pit bull, Great Dane or Rottweiler. Yet these breeds have it easy compared to small dogs. Unfortunately, as human breeding programs encourage ever-smaller "toy" and "teacup" puppies, the dogs' teeth don't keep pace as well and many small breeds are troubled by teeth that are too big for their mouths. If your dog is 20 pounds or less, it's especially important for you to follow a proper oral care routine, including brushing, chewing on dental dog treats and scheduling regular veterinarian visits to care for your dog's teeth. Be certain to choose dental dog chews that are sized correctly for your small dog -- a big dog toy may go unused if your dog can't wrap its mouth around the toy!