When reviewing the data by dog size, researchers found that extra-small breeds (<6.5 kg/14.3 lbs) were up to five times more likely to be diagnosed with periodontal disease than giant breeds (>25 kg/55 lbs). This isn’t the first time research has shown an association between dog breed size and periodontal disease onset; two other Waltham studies, published in the BMC Veterinary Journal, found that periodontal disease progression is accelerated in smaller dog breeds like miniature schnauzers and Yorkshire terriers. An underdiagnosed health issue, when left untreated, periodontal disease (gum disease) in dogs can lead to pain, tooth loss, and other serious health complications. Despite it being one of the more commonly diagnosed issues by veterinarians, many dogs go undiagnosed. The retrospective study used advanced statistical methods to determine that the overall prevalence of periodontal disease in dogs was 18.2%. Although the true prevalence of periodontal disease (44-100% of cases) is only realised through in-depth clinical investigation, the figure reported in this study was consistent with other research based on predominantly conscious visual oral examinations. Dental disease in pets develops gradually and may be reversed if caught and treated early on. Preventing it, however, is better than any treatment. Other risk factors for periodontal disease included a dog’s age, being overweight and time since last scale and polish.