Why Is My Cat Coughing? 7 Common Causes

If you're asking "why is my cat coughing," you're probably already worried. You should be. A cough in a cat is not the same as a cough in a person.

It's never something to shrug off. Cats hide illness well, so a cough you notice is often a sign something is wrong.

Here's what surprises most owners. A cat that sounds like it's coughing is often not coughing at all. Per the American College of Veterinary Internal Medicine guidelines on feline respiratory disease, what owners describe as a cough is frequently a gag, a retch, or a reverse sneeze.

The real challenge is telling the difference. Get that wrong, and you could waste weeks treating a "hairball problem" that's actually feline asthma. This guide walks through that distinction step by step.

Is That Really a Cough? (Or a Hairball, Gag, or Reverse Sneeze?)

Let's clear up the biggest confusion first. Most people assume a cat hacking on the floor is trying to bring up a hairball. Sometimes they are.

But a true cough comes from the lower airways, the lungs and bronchi. A hairball event comes from the stomach and esophagus. They sound different.

You need to know which one you're hearing.

A true cough sounds like this. Your cat crouches low with its neck extended. The mouth opens slightly.

The sound is dry, hacking, and wheezing, coming from deep in the chest. It's forceful. It might sound like a small dog barking.

There is usually no gagging at the end. The cough is the main event.

A hairball event sounds like this. Your cat's whole body heaves. The mouth opens wide.

The sound is wet and retching, coming from the throat and stomach. The cat may produce a small tubular mass of fur and saliva. Sometimes nothing comes up.

But the effort is clearly a gagging motion, not a cough.

Reverse sneezing is a third thing. It sounds like a goose honking or a cat trying to snort something back into its nose. The cat stands still with its neck extended, making a rhythmic snorting sound.

This is an upper airway spasm, not a cough. It usually resolves on its own within a minute.

Here is a quick comparison table to help you tell them apart.

If you are still unsure, record a video. Your vet needs to see the motion and hear the sound. A still photo tells them nothing.

A 30-second video of the episode is worth more than a thousand words of description.

Quick Triage: When to Worry and When to Watch

Not every cough needs an emergency vet visit. But some definitely do. This section gives you a quick decision framework to stay calm and act appropriately.

Call your vet today (not an emergency, but schedule a visit):

• Your cat coughs once or twice a day but otherwise eats, drinks, plays, and breathes normally.
• The cough started after a known event, like a new litter, a scented candle, or a dusty room.
• Your cat is younger than 5 years old with no prior health issues.
• The cough is dry and intermittent, with no discharge from the nose or eyes.

Go to the emergency vet immediately:

• Your cat is breathing with its mouth open, panting, or using its belly to breathe.
• The gums are blue, pale, or gray.
• Your cat collapses or seems weak after a coughing episode.
• The cough is wet, productive, and accompanied by fever or loss of appetite.
• Your cat is coughing up blood or pink-tinged foam.
• A kitten under 1 year or a senior cat over 10 years develops a sudden cough.

Watch and log (no immediate action needed, but start a diary):

• The cough happens once and does not repeat.
• Your cat seems fine immediately after.
• You are not sure if it was a cough or a hairball gag.

If you fall into the watch and log category, keep a written record for 48 hours. Note the time of day, what the cat was doing, the sound, and the duration. If the cough happens again, move to the call your vet today category.

What a Cat Cough Sounds Like, and Why It's Different From a Dog's

Cat coughs are fundamentally different from dog coughs. Dogs cough from kennel cough, collapsing trachea, or heart disease. Cats cough primarily from lower airway disease.

The two species share the same basic reflex, but the causes and sounds are not the same.

A dog with kennel cough makes a classic honking goose sound. It's loud and distinctive. A cat with a cough makes a softer, more subtle sound.

It's easy to miss if you are not paying attention. Many owners describe it as a little cough or a hairball cough. In reality, the cat may be having a mild asthma attack.

The sound of feline asthma is often described as a dry, wheezy cough. It's paroxysmal, meaning it comes in bursts. The cat may cough three or four times in a row, then stop.

It may look like the cat is trying to bring something up, but nothing comes out. That is the key sign. If your cat coughs repeatedly and nothing appears, it's not a hairball.

It's a cough.

A wet cough sounds like fluid in the lungs. The cat may produce mucus or foam. This is more serious and often indicates pneumonia, lungworm, or heartworm-associated respiratory disease.

Wet coughs are less common than dry coughs in cats. They demand immediate attention.

The tone of the cough matters too. A high-pitched, squeaky cough suggests a narrowed airway. A low, rattling cough suggests fluid or inflammation deep in the lungs.

Your vet will ask about the sound. Do your best to describe it. If you can, record it.

The Decision Tree: What's Causing Your Cat's Cough

Now we get to the core of the matter. The following decision tree covers the six most common causes of a cat cough. Each branch describes the symptoms, the typical cat profile, and the next steps.

Use this to narrow down the possibilities before you call your vet.

Branch 1: Coughing Up Hairballs (The Most Common Culprit)

This is the most common reason a cat makes a hacking sound. It's also the most frequently misdiagnosed. Here's how to know if it's really a hairball.

Symptoms: Your cat gags, retches, and may produce a small tubular mass of fur mixed with saliva. The episode lasts 30 seconds to a minute. Afterward, your cat acts completely normal.

The sound is from the stomach and esophagus, not the lungs. There is no wheezing or labored breathing.

Typical cat profile: Long-haired breeds like Persians, Maine Coons, and Ragdolls are overrepresented. Cats that groom excessively due to stress or skin allergies are also prone. Cats older than 1 year are more likely to develop hairballs because their grooming habits are established.

What to do: If your cat produces a hairball and then acts normal, there is no emergency. Prevent future hairballs with regular brushing, a hairball-control diet, and a small amount of petroleum-based lubricant if your vet recommends it. If your cat continues to gag without producing a hairball, or if the gagging turns into a dry cough, move to the next branch.

Branch 2: Feline Asthma (Dry, Wheezing, Chronic)

Feline asthma is the second most common cause of chronic cough in cats. It affects about 1 to 5 percent of the domestic cat population, per published veterinary research. It's a chronic inflammatory condition of the lower airways, similar to human asthma.

Symptoms: A dry, hacking cough that comes in bursts. The cat may wheeze after exercise or excitement. Some cats develop a hunched posture with the neck extended.

The cough is non-productive, meaning nothing comes up. In severe attacks, the cat may breathe with its mouth open or pant.

Typical cat profile: Asthma tends to appear in young to middle-aged cats, 2 to 8 years. Siamese and Himalayan breeds may have a genetic predisposition. Indoor cats are more commonly affected because they are exposed to indoor allergens like dust mites, mold, and cigarette smoke.

What to do: Feline asthma requires a veterinary diagnosis. Your vet will take chest X-rays to look for characteristic changes in the airways. Treatment usually involves corticosteroids to reduce inflammation and bronchodilators to open the airways.

Inhaled medications given via a cat-specific spacer are the gold standard. They have fewer side effects than oral steroids. With proper management, most asthmatic cats live normal lives.

Branch 3: Upper Respiratory Infection (Sneezing, Discharge, Fever)

Upper respiratory infections are the cat equivalent of the common cold. They are caused by viruses like feline herpesvirus and calicivirus, and bacteria like Bordetella, Mycoplasma, and Chlamydia. Coughing is possible, but it is usually accompanied by other symptoms.

Symptoms: Sneezing, nasal discharge, eye discharge, conjunctivitis, fever, lethargy, and loss of appetite. The cough is often moist and accompanied by a gagging sensation. The cat may have a fever of 102.5°F or higher, while normal is 100.5 to 102.5°F.

Typical cat profile: URIs are common in multi-cat households, shelters, and catteries. Kittens and unvaccinated cats are at highest risk. Stress can trigger a latent herpesvirus flare-up in adult cats.

What to do: Most URIs are self-limiting and resolve in 7 to 10 days. Supportive care includes keeping the cat hydrated, wiping away nasal discharge, and using a humidifier. If symptoms persist longer than 10 days, or if the cat stops eating, your vet may prescribe antibiotics for secondary bacterial infections.

Vaccination reduces the severity of URIs but does not prevent them entirely.

Branch 4: Heartworm or Lungworm (Outdoor Cats, Persistent Cough)

Heartworm disease in cats is different from dogs. Cats are not the natural host, so the worms don't reach adulthood as often. But the immune reaction to the larvae causes severe lung inflammation.

This is called heartworm-associated respiratory disease. Lungworm infection, caused by Aelurostrongylus abstrusus, is a separate parasite that lives in the lung tissue.

Symptoms: A persistent cough that does not respond to standard treatments. The cat may also have rapid breathing, weight loss, vomiting, or lethargy. Some cats develop a sudden collapse or seizure-like episode.

In heartworm disease, the cough is often dry and chronic.

Typical cat profile: Outdoor cats are at significantly higher risk for both heartworm and lungworm. The disease is more common in regions with high mosquito populations for heartworm, or where cats eat snails, slugs, or birds for lungworm. As of 2026, heartworm is reported in all 50 states, with the highest prevalence in the Southeast, the Gulf Coast, and the Mississippi River Valley.

What to do: Diagnosis requires blood tests for heartworm antigen and antibody, and fecal examination for lungworm larvae. Chest X-rays show characteristic changes. There is no approved treatment for adult heartworms in cats.

Treatment is supportive and focuses on reducing inflammation with corticosteroids. Prevention is the best approach. Year-round heartworm prevention, using monthly topical or oral medication, is recommended for all cats, even indoor ones, because mosquitoes get inside.

Branch 5: Foreign Body or Tracheal Collapse (Sudden, Honking, Distress)

A foreign body like a piece of grass, a small toy, or a bone fragment lodged in the airway causes a sudden, severe cough. Tracheal collapse is less common in cats than dogs, but it can occur, especially in brachycephalic breeds.

Symptoms: Sudden onset of coughing, gagging, or choking. The cat may paw at its mouth, drool, or show signs of distress. The cough is often a honking sound.

If the airway is blocked, the cat will have difficulty breathing with loud, raspy sounds.

Typical cat profile: Foreign bodies are more common in kittens and young cats that explore with their mouths. Brachycephalic breeds like Persians, British Shorthairs, and Exotic Shorthairs are predisposed to tracheal collapse due to their anatomy. Cats with a history of eating string, ribbons, or grass are at higher risk.

What to do: This is a true emergency. If you suspect a foreign body, do not try to remove it yourself unless you can see it clearly and it is loose. Attempting to pull out something lodged in the throat can cause more damage.

Go to the emergency vet immediately. They may need to sedate the cat and use a bronchoscope to visualize and remove the object.

Branch 6: Allergies or Environmental Triggers (Seasonal, Exposure-Linked)

Cats can have allergic reactions to inhaled substances, just like people. The cough is often seasonal or linked to a specific environment.

Symptoms: A dry cough that appears after exposure to a trigger. The trigger could be cigarette smoke, perfume, air fresheners, scented candles, dusty cat litter, mold, pollen, or certain laundry detergents. The cat may also have sneezing, watery eyes, or itchy skin.

Typical cat profile: Any cat can develop allergies. Indoor cats are more commonly affected by indoor triggers. Seasonal allergies occur in spring and fall.

Cats that live in homes with smokers or frequent use of scented products are at higher risk.

What to do: Identify and remove the trigger. Switch to unscented, low-dust cat litter. Stop using air fresheners and scented candles.

Keep the house clean with a HEPA filter vacuum. If the cough persists, your vet may recommend antihistamines or corticosteroids. Allergy testing is available but is rarely necessary for a simple cough.

How to Record and Describe the Cough for Your Vet

Your vet can't see the cough. They rely on your description. The more accurate you are, the faster they can diagnose the problem.

Here is what you should record and share.

Video. This is the single most useful thing you can do. Open your phone camera, get low to the floor, and record the cat during a coughing episode. Capture the entire event, from the start to the moment the cat stops.

Record the sound. A 30-second video is ideal.

Timing. Note when the cough happens. Is it in the morning, late at night, after eating, after exercise, or after a specific activity? Timing often points to the cause.

Frequency. How many times does the cat cough per day? Is it a single cough or a burst of three or four? Keep a log for 48 hours before your vet visit.

Trigger. Did anything happen right before the cough? Did the cat run, play, eat, or move from one room to another? Did you just light a candle or change the litter?

Associated signs. Is the cat sneezing, wheezing, drooling, or showing signs of pain? Is it eating and drinking normally? Is it playful or lethargic?

Outcome. Did the cough resolve on its own? Did the cat produce anything? What did it look like?

Provide this information to your vet in a clear, concise manner. If you have a video, email it to the clinic before your appointment. The vet can watch it and prepare for your visit.