There really is no evidence that rawide bones cause bad breath but this is a common problem. Many dogs suffer from bad breath. Some of the experts say that if a dog has bad breath, it is usually from Periodontal disease.  Usually plaque forms on the teeth to cause this condition. You really should try to take care of this to ensure the overall health of your dogs teeth and gums.  Plaque formation is a serious condition that could cause gingivitis. This could eventually lead to teeth lose and we all know that we cannot replace your dogs teeth once they are gone. He will have trouble chewing and could develop a host of other conditions. Prevention is better than a cure. You should brush your dogs’ teeth from the time it is a puppy. Once you start brushing, he will become used to it. Buy a good toothbrush and toothpaste. They make them in tasty flavors that dogs like. Get in the habit of brushing their teeth everyday. It will not only prevent dental disease but it could prevent more serious diseases down the road.