That Cough Might Be Nothing—Or Your Dog May Be Trying to Tell You Something
You hear it from the other room.
Cough. Cough. Hack.
Then your dog goes right back to whatever they were doing.
Was something stuck in their throat? Did they swallow wrong? Is it allergies? Kennel cough? Should you call the vet?
At Healthy Pets of Ohio, coughing is one of those symptoms that can mean a lot of different things. An occasional cough may be nothing to worry about, but a new, persistent or worsening cough deserves attention—especially when it’s accompanied by other changes in your dog’s health or behavior.
And as we move into fall in Central Ohio, respiratory issues can become particularly noticeable as dogs spend time at boarding facilities, daycare, grooming appointments, dog parks and other places where they’re around other dogs.
So, if your dog suddenly starts coughing, here’s what you should know.
First Things First: Not Every Dog Cough Is Kennel Cough
When a dog starts coughing, many owners immediately think:
Kennel cough.
It’s certainly one possibility, but coughing isn’t a disease by itself. It’s a symptom.
Dogs cough for many reasons, ranging from temporary throat irritation to respiratory infections and underlying heart or airway conditions.
Possible causes include:
- Canine infectious respiratory disease
- Throat or airway irritation
- Allergies or environmental irritants
- Collapsing trachea
- Pneumonia
- Heart disease
- Parasites
- Something lodged or irritating the throat
- Other respiratory or medical conditions
That’s why it’s important to look beyond the cough itself.
What Does Kennel Cough Sound Like?
The term “kennel cough” is commonly used to describe contagious respiratory infections in dogs, often grouped under canine infectious respiratory disease complex (CIRDC).
A dog with kennel cough may develop:
- A persistent dry or hacking cough
- A honking cough
- Gagging or retching after coughing
- Sneezing
- Nasal discharge
Some dogs otherwise seem completely normal—they’re eating, playing and acting like themselves despite the cough.
Others can become more noticeably ill.
Despite the name, dogs don’t have to stay at a kennel to be exposed.
Where Can Dogs Pick Up Respiratory Infections?
Any environment where dogs spend time in close proximity can potentially allow respiratory illnesses to spread.
That includes:
- Boarding facilities
- Doggy daycare
- Groomers
- Dog parks
- Training classes
- Shelters
- Pet-friendly events
- Veterinary waiting areas
- Playdates with other dogs
If your dog recently spent time around other dogs and develops a cough afterward, make sure you mention that exposure to your Healthy Pets veterinarian.
“Listen to the Cough—Then Look at the Dog”
The sound of a cough can provide useful information, but how your dog is acting is often even more important.
Instead of focusing only on whether the cough sounds dry, wet, hacking or honking, take a look at the entire dog.
Ask yourself:
Is My Dog Eating Normally?
A dog that’s coughing but still enthusiastically eating and drinking is different from a dog that’s coughing and refusing food.
Is Their Energy Level Normal?
Are they still interested in walks, toys and family—or suddenly sleeping much more than usual?
Is Their Breathing Normal?
Watch your dog while they’re resting.
Are they breathing comfortably, or does breathing appear faster or more difficult than usual?
Is There Nasal or Eye Discharge?
Sneezing, runny eyes or nasal discharge can provide additional clues about a respiratory illness.
How Long Has the Cough Been Going On?
One isolated cough after drinking water is very different from coughing repeatedly throughout the day for several days.
Is It Getting Worse?
A cough that becomes more frequent or severe deserves veterinary attention.
The cough matters. The rest of the dog matters even more.
Why Is My Dog Coughing at Night?
This is another question pet owners frequently search online.
Sometimes owners simply notice coughing more at night because the house is quiet.
But coughing that consistently occurs when a dog is resting, sleeping or lying down can also be associated with certain airway, respiratory or cardiac conditions.
If you’re noticing a pattern—especially a new one—tell your veterinarian.
One of the most helpful things you can do is record a video of your dog coughing.
Dogs have an amazing ability to stop doing the exact thing you brought them to the veterinarian for as soon as they enter the exam room. A phone video can give your veterinary team valuable information about what you’re hearing at home.
Could Fall Allergies Make My Dog Cough?
Environmental allergens and irritants can sometimes contribute to respiratory symptoms, although allergies in dogs more commonly show up through the skin and ears.
Fall can bring exposure to:
- Ragweed
- Mold
- Dust
- Leaf debris
- Smoke
- Household fragrances
- Increased indoor allergens as windows close
If your dog’s cough appears seasonally, mention the pattern to your veterinarian rather than assuming allergies are the cause.
What Is a Collapsing Trachea?
A collapsing trachea occurs when the windpipe becomes weakened and partially flattens during breathing.
It is more commonly seen in small and toy-breed dogs.
Owners sometimes describe the resulting cough as a distinctive “goose honk.”
Dogs may cough more during:
- Excitement
- Exercise
- Pulling against a collar
- Hot or humid weather
- Eating or drinking
A honking cough doesn’t automatically mean your dog has a collapsing trachea, however. Your veterinarian will need to evaluate the symptoms and determine whether additional testing is appropriate.
Can Heart Problems Cause a Dog to Cough?
Yes, certain heart conditions can be associated with coughing or changes in breathing.
This becomes especially important in older dogs or dogs with known heart conditions.
Watch for other changes such as:
- Reduced stamina
- Difficulty exercising
- Rapid breathing while resting
- Weakness
- Restlessness at night
- Collapse or fainting
A cough alone doesn’t mean your dog has heart disease, but persistent coughing shouldn’t simply be written off as aging.
What If My Dog Suddenly Starts Coughing or Gagging?
A sudden coughing or gagging episode may mean something irritated your dog’s throat.
But if your dog appears to be choking or struggling to breathe, that’s an emergency.
Signs requiring immediate veterinary attention include:
- Difficulty breathing
- Blue, gray or very pale gums
- Repeated choking or gagging
- Pawing frantically at the mouth
- Collapse
- Severe distress
Don’t wait to see whether these symptoms improve on their own.
Should I Keep My Coughing Dog Away From Other Dogs?
If your dog develops an unexplained new cough, it’s a good idea to limit contact with other dogs until you’ve spoken with your veterinarian.
If an infectious respiratory illness is responsible, your dog could potentially spread it to others.
That means temporarily avoiding:
- Dog parks
- Daycare
- Boarding
- Group training
- Playdates
- Other close dog-to-dog interactions
When scheduling an appointment, tell the Healthy Pets team that your dog is coughing before you arrive. The practice may have specific instructions designed to reduce potential exposure to other patients.
When Should I Take My Dog to the Vet for a Cough?
Contact your veterinarian if:
- The cough persists or keeps returning
- Coughing becomes more frequent
- Your dog is coughing throughout the night
- Your dog’s appetite decreases
- Their energy level changes
- Nasal discharge develops
- You notice wheezing or other unusual breathing sounds
- Your dog has recently been around other coughing dogs
- Your puppy, senior dog or dog with an existing medical condition develops a cough
Seek urgent veterinary care if your dog:
- Is struggling to breathe
- Has blue, gray or unusually pale gums
- Collapses
- Appears to be choking
- Becomes extremely weak or distressed
When breathing is involved, it’s always better to take changes seriously.
Don’t Give Your Dog Human Cough Medicine
It can be tempting to reach into the medicine cabinet when your dog starts coughing.
Don’t.
Human cough and cold medications can contain ingredients that are unsafe or toxic to pets, and suppressing a cough without understanding what’s causing it can potentially mask an important symptom.
Talk with your veterinarian before giving your dog any medication.
What Will My Veterinarian Look For?
Your Healthy Pets veterinarian will start by listening to your dog’s heart and lungs and evaluating their overall condition.
Depending on the symptoms and medical history, additional diagnostics may be recommended, such as:
- Chest X-rays
- Bloodwork
- Respiratory testing
- Heart evaluation
- Other diagnostic testing
The goal isn’t simply to stop the cough.
It’s to figure out why your dog is coughing in the first place.
Healthy Pets of Ohio Is Here to Help
One cough doesn’t necessarily mean something is wrong.
But if you find yourself thinking, “Why does my dog keep coughing?”, that’s worth paying attention to.
At Healthy Pets of Ohio, our veterinary teams can evaluate your dog’s cough, breathing, heart and overall health to help determine what’s behind the symptom and what treatment—if any—is needed.
Before your appointment, try to take a short video of the coughing episode and make note of when it happens, how frequently it occurs and whether you’ve noticed any other changes.
Those little details can help us put the pieces together.
Frequently Asked Questions About Coughing in Dogs
Why is my dog suddenly coughing?
Dogs can cough because of respiratory infections, throat irritation, airway problems, heart disease, parasites, environmental irritants or other medical conditions. A persistent or worsening cough should be evaluated by a veterinarian.
How do I know if my dog has kennel cough?
Dogs with canine infectious respiratory disease often develop a dry, hacking or honking cough and may gag after coughing. However, several conditions can cause similar symptoms, so coughing alone can’t confirm kennel cough.
Why is my dog coughing at night?
Owners may notice coughing more when the house is quiet, but persistent nighttime or resting coughs can also occur with respiratory, airway or heart conditions. A recurring nighttime cough should be discussed with your veterinarian.
Can my dog get kennel cough without being boarded?
Yes. Dogs can encounter contagious respiratory illnesses anywhere dogs interact closely, including daycare, dog parks, grooming facilities, training classes and playdates.
Should I record my dog’s cough for the veterinarian?
Absolutely. A phone video can be extremely helpful because your dog may not cough during the veterinary exam.
When is a dog’s cough an emergency?
Difficulty breathing, blue or gray gums, collapse, severe weakness or signs of choking require immediate veterinary attention.