Known as Kennel Cough or Tracheobronchitis is a virus causing general respiratory problems including pneumonia. Low-dose exposure or vaccination with this disease has been known to cause a better immune resistance to viral Hepatitis in dogs.
Coughing, nasal discharge, lethargy, depression.
Viruses are transmitted from one infected animal to another and may even be airborne.
Consult your veterinarian. Generally, this disease responds well to antibiotic therapy and treatment of symptoms.