Unhealthy dog teeth usually happen because of poor oral hygiene. In fact, this poor practice can lead to periodontal disease, a condition that causes tooth loss. The good thing is that regular dental checkups can help prevent this issue and keep your dog’s mouth, teeth, and gums healthy. So how will you know if your dog’s teeth are unhealthy? Find out in this article the common signs and symptoms of oral health problems in the dog, including some tips to prevent dog dental diseases.