The symptoms of dog flu, also known as canine influenza, include persistent coughing, fever, yellow nasal discharge and sometimes pneumonia. Learn the difference between canine influenza, kennel cough and upper respiratory allergies withhelpful information from an experienced veterinarian in this free video on pet care. Expert: Dr. James Talbott Bio: Dr. James R. Talbott is a staff veterinarian at Belle Forest Animal Hospital and Kennel in Nashville, Tenn. Filmmaker: Dimitri LaBarge