«Dog flu» is caused by infection with the canine influenza virus. (petwave.com)
By 3 years of age, almost 85 % of pets suffer from periodontal disease — a progressive bone loss caused by infection in the gums. (zippivet.com)
Adult dogs can also be affected by this infection particularly when undergoing periods of stress such as traveling, moving and even weather changes. (caninejournal.com)