Diagnosis and treatment of chronic bronchitis (CB) affecting dogs

As described at Diagnosis and Therapy of Canine Chronic Bronchitis —

“Chronic bronchitis (CB) is an inflammatory airway disease, which, in association with tracheobronchial collapse, is probably the most common chronic canine airway disorder. Inflammation within airways causes chronic cough and excessive mucus production. Because, dogs can’t expectorate (spit), it is not always easy to know if the dog is making increased airway mucus. Therefore, the diagnosis of CB is usually based on chronic cough alone.”

Additional recommended reading:
The Country Vet’s Book of Home Remedies for Dogs
Vet On Call: The Best Home Remedies for Keeping Your Dog Healthy (Dog Care Companions)
The Merck Veterinary Manual (Merck Veterinary Manual)