When a dog is being sick and coughing at the same time, the combination can be concerning because the two symptoms may occur together for different reasons.
It is also important to distinguish vomiting from coughing or gagging, as what appears to be sickness may sometimes involve material being brought up after a bout of coughing.
The timing of each symptom, your dog’s breathing, appetite, energy, and what is being brought up can help provide important clues.
We explain what being sick and coughing may indicate, what to watch for at home, and when your dog needs immediate veterinary attention.
Table of Contents
Dog Being Sick and Coughing: Why It Happens
A dog being sick and coughing may have kennel cough, acid reflux, pneumonia, heart disease, tracheal collapse, gastroenteritis, an inhaled foreign object, or another underlying illness.
Some dogs may also develop lethargy, loss of appetite, difficulty breathing, nasal discharge, or fever.
Identifying whether your dog is coughing first and then vomiting, or vomiting first and then coughing, can help your veterinarian determine the underlying cause.
Depending on the underlying cause, a dog may also experience:
Coughing or gagging
- Loss of appetite
Lethargy
Difficulty breathing
Nasal discharge
Fever
Excessive swallowing or lip licking
Read more: Dog suddenly vomiting and diarrhea (Possible causes)
Dog Being Sick and Coughing: Common Causes
Kennel Cough
Kennel cough is one of the most common causes of coughing in dogs and can occasionally lead to vomiting after a prolonged coughing fit.
The infection irritates the windpipe and upper airways, causing a harsh, dry cough that often sounds as though your dog is trying to clear something from their throat.
Repeated coughing may trigger gagging or the vomiting reflex, causing dogs to bring up mucus, foam, or stomach contents.
Dogs that spend time in boarding kennels, dog parks, grooming salons, or daycare facilities have a higher risk of exposure because the infection spreads easily between dogs.
Veterinarians usually diagnose kennel cough based on the characteristic cough and physical examination.
Most mild cases improve with rest, while more severe infections may require cough suppressants, antibiotics if a bacterial infection is suspected, or additional supportive care.
Read more: Dog Being Sick and Breathing Heavily (Causes and treatment)
Acid Reflux
Acid reflux occurs when stomach acid travels back into the esophagus, irritating the lining of the throat. This irritation may trigger coughing, repeated swallowing, lip licking, and eventually vomiting.
Symptoms often become more noticeable after meals or after long periods without food.
Some dogs also gag, gulp, drool excessively, or appear uncomfortable when lying down because stomach acid continues to irritate the esophagus.
Diagnosis is usually based on clinical signs and by ruling out other digestive disorders. Treatment commonly includes feeding smaller meals, dietary adjustments, and medications that reduce stomach acid or protect the esophagus.
Pneumonia
Pneumonia develops when the lungs become inflamed because of bacterial, viral, fungal, or aspiration infections. Dogs commonly develop a moist cough, fever, lethargy, and reduced appetite.
Persistent coughing may occasionally cause vomiting, while severe respiratory infections can also make dogs feel nauseated.
Dogs with pneumonia often breathe more rapidly, tire easily, and may have nasal discharge or noisy breathing.
Diagnosis usually involves chest X-rays, blood tests, and sometimes airway sampling.
Treatment often includes antibiotics, oxygen therapy, intravenous fluids, and supportive care depending on the severity of the infection.
Heart Disease
Heart disease, particularly congestive heart failure, can cause coughing as fluid builds up around or within the lungs. Some dogs cough so forcefully that they gag or vomit after coughing episodes.
Older dogs and certain breeds are more likely to develop heart disease. Additional signs may include exercise intolerance, rapid breathing, collapse, weakness, or a swollen abdomen in advanced cases.
Veterinarians diagnose heart disease using a physical examination, chest X-rays, electrocardiograms (ECGs), echocardiography, and blood tests.
Early treatment can significantly improve quality of life and slow disease progression.
Tracheal Collapse
Tracheal collapse is a condition in which the windpipe becomes weakened and partially flattens during breathing.
Small breeds such as Yorkshire Terriers, Pomeranians, Chihuahuas, and Toy Poodles are particularly prone to this condition.
The resulting airway irritation causes a characteristic honking cough that may be severe enough to trigger gagging and vomiting.
Excitement, exercise, pulling on a collar, or hot weather often make the coughing worse.
Diagnosis commonly involves chest X-rays, fluoroscopy, or endoscopy. Treatment may include weight management, harnesses instead of collars, cough suppressants, anti-inflammatory medications, or surgery in severe cases.
Acute Gastroenteritis
Acute gastroenteritis causes inflammation of the stomach and intestines, resulting in nausea and vomiting.
Some dogs also cough or gag because repeated vomiting irritates the throat or because stomach contents briefly reach the back of the mouth.
The condition may develop after eating spoiled food, sudden dietary changes, infections, or irritating substances.
Diarrhea, abdominal discomfort, reduced appetite, and lethargy commonly occur alongside the vomiting.
Most mild cases improve with supportive care, but dogs with persistent vomiting, dehydration, or worsening symptoms should receive prompt veterinary evaluation.
Inhaled Foreign Object
Grass seeds, small sticks, food particles, or other foreign material can become lodged within the throat or airways, causing persistent coughing and gagging. Some dogs eventually vomit because of the repeated irritation.
Affected dogs may paw at their mouth, swallow repeatedly, drool excessively, or show signs of respiratory distress if the airway becomes partially blocked.
Symptoms often begin suddenly after running outdoors or chewing objects.
Your veterinarian may use sedation, endoscopy, or imaging to locate and remove the foreign object. Prompt treatment helps prevent infection and more serious airway complications.
Lungworms or Other Respiratory Parasites
Although less common than digestive parasites, lungworms and certain other respiratory parasites can irritate the lungs and airways, causing chronic coughing. Some affected dogs also vomit after severe coughing episodes.
Additional signs may include reduced exercise tolerance, weight loss, difficulty breathing, or coughing up mucus.
Dogs become infected by ingesting slugs, snails, or contaminated environments in areas where lungworms are present.
Diagnosis often involves specialized fecal testing, blood tests, or imaging. Treatment includes prescription antiparasitic medication and supportive care if respiratory signs are severe.
Dog Being Sick and Coughing: What to Do
If your dog coughs once or twice and vomits only once but otherwise appears bright and alert, monitor them closely over the next 24 hours. Keep fresh water available and watch for any worsening of either symptom.
Pay attention to whether your dog coughs before vomiting or vomits before coughing, as this information can help your veterinarian determine whether the problem is primarily respiratory or digestive.
Also note whether the cough is dry, moist, or honking, and whether your dog develops fever, difficulty breathing, nasal discharge, or loss of appetite.
Avoid exposing your dog to cigarette smoke, strong cleaning products, or other airborne irritants, and never give human cough medicines unless specifically instructed by your veterinarian.
When to Call or Visit the Vet
Vomiting together with coughing should always be monitored carefully, especially if breathing is affected.
Schedule an appointment if you notice:
Repeated coughing and vomiting
Reduced appetite
Mild lethargy
Persistent gagging
Nasal discharge
Mild breathing changes
Weight loss
Coughing that lasts more than a few days
Seek emergency veterinary attention immediately if your dog develops:
Difficulty breathing or severe respiratory distress
Blue or pale gums
Repeated vomiting with inability to keep water down
Collapse or extreme weakness
Coughing up blood
Suspected inhaled foreign object
High fever with severe lethargy
Choking or inability to breathe normally
Dog Being Sick and Coughing: Treatment
Veterinary treatment for a dog that is vomiting or being sick while also coughing begins with an examination of the respiratory and gastrointestinal systems.
The veterinarian may recommend chest X-rays, blood tests, heart evaluation, or other diagnostic testing to determine the underlying problem.
Treatment may include anti-nausea medication, fluids, cough medication, antibiotics when indicated, anti-inflammatory medication, bronchodilators, or heart medications depending on the diagnosis.
Dogs with breathing difficulty or low oxygen levels may require oxygen therapy and hospitalization.
Recovery and Monitoring
Recovery depends on the underlying cause. Mild kennel cough often improves within one to three weeks, while pneumonia, heart disease, tracheal collapse, or aspiration-related conditions may require more intensive treatment and ongoing management.
Monitor your dog’s appetite, water intake, breathing, coughing frequency, activity level, and whether vomiting becomes less frequent after treatment begins.
Administer all prescribed medications exactly as directed and attend follow-up appointments recommended by your veterinarian.
Contact your veterinarian if coughing becomes more frequent, vomiting continues, your dog refuses food or water, develops difficulty breathing, becomes increasingly lethargic, or shows signs of dehydration despite treatment.
Key Takeaway
A dog being sick and coughing results from kennel cough, acid reflux, pneumonia, heart disease, tracheal collapse, gastroenteritis, an inhaled foreign object, or respiratory parasites.
Sometimes severe coughing triggers vomiting, while in other cases digestive disease irritates the throat and causes coughing.
Early veterinary evaluation can determine whether the problem originates in the digestive system or the respiratory tract and ensure your dog receives appropriate treatment.
If your dog has difficulty breathing, repeatedly vomits, coughs up blood, collapses, develops blue gums, or is choking, seek emergency veterinary care immediately.