When your normally healthy dog starts to cough, your ears perk up and your mind races with concerns and questions — Is it normal for dogs to cough? When is dog coughing an emergency? Is my dog sick? When should you take your coughing dog to the vet? 

While most coughs are harmless and temporary, some can be a sign that something more concerning is brewing under the surface. Let’s break down why dogs cough, what different coughs can mean, and when it’s time to seek urgent veterinary care at VEG ER for Pets — because when it comes to emergencies, timing matters.

Common resons dogs cough

Understanding the causes can help you gauge the seriousness of the situation.

1. Dog coughing due to kennel cough

   One of the most common causes of coughing in dogs is an infectious respiratory illness called kennel cough. It’s highly contagious and spreads easily anywhere dogs gather, like the park, kennel or even a grooming salon.

   
   

   Kennel cough symptoms include: 

   • Dry, loud and honking cough

   • Sneezing

   • Nasal or eye discharge

   • Fever

   • Lethargy

     
     

     Most mild cases improve with time, but more severe infections can progress to pneumonia, which requires urgent treatment.

2. Dog cough due to tracheal collapse

   Common in small breeds, this happens when the cartilage ring that partially encircles the trachea weakens, causing it to collapse when your dog inhales.

   
   

   Look for:

   • A chronic harsh, honking cough

   • Coughing when excited or pulling on a leash

   • Gagging or retching sounds

   
   

   While not always an emergency, flare-ups can become serious if breathing becomes labored or constant.

3. Dog cough caused by heart disease and congestive heart failure

   Heart issues like congestive heart failure can cause fluid to build up in or around the lungs, leading to coughing.

   Look for:

   • A wet or moist-sounding cough

   • Coughing that worsens at night or after rest

   • Fatigue or reduced exercise tolerance

   
   

   Heart-related coughing needs prompt veterinary evaluation, especially if breathing patterns change suddenly.

   
   

   

   When your dog is coughing, it can be for a variety of reasons. Review possible causes and call any 24-hour VEG hospital to speak with a vet who can answer your medical questions.

4. Coughing in dogs due to pneumonia

   Pneumonia can develop from infections, aspiration (inhaling food or liquid), or weakened immunity.

   
   

   Signs of pneumonia in dogs include:

   • Wet or phlegmy cough

   • Fever

   • Lethargy

   • Rapid or labored breathing

   
   

   This is a medical emergency and requires immediate veterinary care.

5. Dog coughing caused by allergies and airway irritation

   Yup, just like us humans, your dog may have an allergy to dust, pollen, smoke, perfumes, or cleaning products which can irritate your pet’s airway.

   These coughs are often:

   • Mild

   • Intermittent

   • Paired with sneezing or itchy skin

   
   

   While usually not urgent, worsening symptoms or prolonged coughing should be checked out.

6. Dog coughing caused by foreign bodies

   Grass awns or foxtails, seeds, or small objects when ingested can get lodged in the throat, airway or lungs.

   
   

   This may cause:

   • Sudden coughing fits

   • Gagging or choking sounds

   • Persistent coughing that doesn’t improve

   
   

   The natural response of the body is to try to cough it up. If this is unsuccessful, head to VEG emergency dog hospital so the object can be removed by a vet immediately.

7. Cough in dogs due to parasites (heartworm and lungworms)

   Parasites like heartworms and lungworms can impact the heart and lungs, causing chronic coughing in dogs.

   
   

   Possible symptoms:

   • Exercise intolerance

   • Weight loss

   • Labored breathing

Routine prevention through medication is key. But, coughing in an unprotected dog should be taken seriously. Seek veterinary care for diagnosis and treatment.

8. Dog cough caused by acid reflux

   Stomach acid that irritates the esophagus can cause a dog to exhibit coughing.

   
   

   Acid reflux symptoms in dogs include:

   • Coughing after eating

   • Gagging or swallowing motions

   • Regurgitation

   
   

   Certain medications can also contribute to this irritation. Speak to your primary care vet for guidance.

9. Coughing in dogs due to tumors or cancer

   Growths in the lungs, trachea, or chest cavity can lead to persistent coughing. Chronic or worsening coughs should never be ignored. Consult your vet for diagnosis.

10. Dog cough caused by toxins and internal bleeding

    Exposure to rodent bait (rat poison) can cause internal bleeding in the chest, leading to coughing or coughing up blood. This is an immediate emergency. Head to VEG emergency animal hospital right away!

VEG ER for Pets is open 24 hours every day to care for dogs and all pets. Call or come in anytime; no appointments needed or taken. Walk in for immediate vet attention.

Observe your dog's cough before you visit the vet

Making a note of the following may help vets diagnose the cause of your dog’s cough faster:

• How often your dog coughs

• When it typically happens (at night, during exercise, or after eating)

• Whether it sounds wet or dry

• Any recent boarding, grooming or exposure to other dogs

• Additional symptoms like fever, appetite changes, or lethargy

When is dog coughing an emergency?

A dog cough isn’t something to brush off — especially if it’s persistent, worsening or paired with breathing changes. Some causes are minor, but others can escalate quickly and become life-threatening.

If your dog’s cough changes suddenly, becomes more frequent, or sounds wetter or harsher, it’s time to check in with a vet.

Seek emergency care at VEG immediately if you notice:

• Blue, gray or very pale gums

• Wheezing, rapid or labored breathing

• Coughing up blood

• Collapse or extreme weakness

• Loss of appetite

• A wet cough paired with fever or lethargy

• Sudden onset of severe coughing

When in doubt, it’s always safer to have any breathing and cough-related concerns evaluated sooner rather than later. Our emergency vets at VEG will get to the bottom of your pet’s condition, so both you and your dog can breathe easier.

What will the vet do for a dog's cough?

You’ve made the decision to seek veterinary help, so what should you expect during your visit?

1. Physical examination: We’ll start by examining your dog from nose to tail, paying special attention to the respiratory system.

2. Diagnostic tests: Further tests like x-rays or blood work might be required to get to the root of the issue.

3. Customized treatment plans: Depending on the diagnosis, we will suggest a course of action tailored specifically for your dog’s condition.

VEG animal hospital is open 24/7 to treat your dog's cough

When your dog has a cough, it’s always better to be safe than sorry. Give your local 24/7 VEG a call, and let’s make sure your dog gets the care they need! Take your dog to any of our 24-hour vet hospitals, and your pet will be triaged immediately. Best of all, you get to stay with your furry BFF the entire time.