Abstract: An 8-month-old unvaccinated female dog is reported with anorexia, vomiting, inappetence and diarrhoea for five days. Physical examination revealed bilateral purulent conjunctivitis, tachypnoea and coughing. Pulmonary radiography revealed opacity on both lung areas. A diffuse interstitial opacity was observed at the caudo-dorsal lobes, and the cardiac silhouette showed rounding at the cranial edge. The dog was diagnosed with acute viral disease.