Learning how to clean your dog's teeth helps ... But what causes it and how long can you expect it to stick around? How often ...

Narrator Tip number one to keeping your dog's teeth clean and healthy: Let him chew. But not on just anything. First, make sure it's safe. No sticks, no rocks, and be careful about bones.

Although dogs will happily chew on sticks and stones, getting them a chew toy is a safer and more effective teeth-cleaning ...