Dogs can get cavities just like we do! It is recommended that you brush your dogs teeth twice a week. If your dog has bad breath, that can be a sign of gum disease and plaque build-up. Not only is the smell unpleasant, this bacteria can enter the bloodstream and infect other vital organs. Check your dogs teeth regularly and have the teeth checked by a vet at least once a year.
When brushing your dogs teeth, make sure to use toothpaste meant for dogs. Human toothpaste is not edible, and your dog will end up swallowing it. You can buy toothbrushes meant for dogs or a finger cap with a brushing surface.