Dog Coughing Fits: Causes & Remedies

Common Causes of Dog Coughing

Coughing in dogs is a reflex triggered by irritation in the airway. Common causes include respiratory infections like kennel cough, collapsing trachea (especially in toy breeds), heartworms, bacterial infections, tumors, allergies, and inhaled foreign objects such as grass seeds or food particles. Chronic bronchitis and congestive heart failure can also lead to persistent coughing. A cough that worsens with excitement, exercise, or pressure from a collar may signal tracheal collapse or heart disease.

Kennel Cough and Respiratory Infections

Kennel cough, or canine tracheobronchitis, is a highly contagious upper respiratory infection that spreads in crowded, poorly ventilated areas. It typically causes a dry, hacking cough that may worsen with excitement or exertion. While mild cases resolve in 7–14 days with rest, severe cases can lead to pneumonia, especially in puppies or dogs with pre-existing conditions. Treatment includes antibiotics (tetracyclines or trimethoprim-sulfa), cough suppressants, and humidification. The intranasal Bordetella vaccine can help prevent infection, especially in dogs that board, groom, or attend shows.

Collapsing Trachea in Toy Breeds

Collapsing trachea is most common in small breeds like Chihuahuas, Pomeranians, and Toy Poodles. It occurs when the tracheal rings lose rigidity, causing the airway to collapse during inhalation. The hallmark symptom is a distinctive “goose-honk” cough, often triggered by stress, pulling on a collar, or eating. Obesity and chronic bronchitis increase the risk. Management includes switching to a harness or head halter, weight loss, avoiding irritants like smoke, and reducing stress. Severe cases may require veterinary evaluation and medical intervention.

Heartworms and Other Systemic Causes

Heartworms, transmitted by mosquitoes, can cause coughing, exercise intolerance, and fainting due to blockage in heart vessels. Dogs with heartworms may also show signs of lethargy and weight loss. Prevention is key—vets recommend regular preventative medication. Coughing lasting more than a week should prompt a vet visit to rule out heartworms, especially in dogs in endemic areas. Blood tests and X-rays are used for diagnosis.

Foreign Bodies and Emergency Care

Inhaling grass seeds or food particles can cause sudden, intense coughing, particularly after running in tall grass. If the object becomes lodged, it can lead to infection, mucus buildup, and pneumonia. Bronchoscopy is often successful in removing foreign bodies, especially if done within two weeks of inhalation. Never use over-the-counter cough medicines without vet approval, as they can delay proper diagnosis and treatment.