thanks Pixie. Craig I never brush them. I feed her California Natural dog food. no by-products. the hard food is good for there teeth and I give her baby carrots as treats and the vet said they are great for treats as low in carbs and crunchy.too many carbs are not good for dogs.Her teeth are in excellent shape but she is only 3 so I am sure that makes a difference too. @ Scott. the better to bite you with my dear