How do you keep your German Shorthaired Pointer’s teeth clean and healthy? First, don’t use toothpaste meant for humans, because there are chemicals in it that would be harmful to your dog if he were to swallow them. (As smart as the shorthair is, he has not figured out how to spit out toothpaste.) Instead, use canine toothpaste with delectable doggie flavors, such as chicken or beef.