Key Highlights
- Watch for these signs: Coughing, sneezing, labored breathing, blue-ish gums, or noisy breathing (wheezing/snorting).
- Highly contagious: Kennel cough and canine influenza spread fast in dog parks, daycare, and boarding facilities.
- Breed matters: Flat-faced (brachycephalic) breeds like Pugs and Bulldogs are prone to airway obstruction.
- Prevention works: Vaccination, good hygiene, and avoiding sick dogs reduce risk significantly.
- When to panic: Open-mouth breathing at rest, blue tongue, or collapse = emergency vet now.
Why Your Dog’s Breathing Deserves Attention
You hear a strange cough in the middle of the night. Or maybe your Bulldog is snorting louder than usual. Is it a cold? Allergies? Or something more serious?
Dogs can’t tell us when they’re struggling to breathe. That’s why you need to know the signs.
This guide walks you through 7 common canine respiratory issues — from the easily treatable (kennel cough) to the life-threatening (pneumonia, distemper). You’ll learn:
- What each condition looks and sounds like
- Which breeds are most at risk
- Exactly when to call your vet (or head to the emergency room)
Before we start: If your dog has sudden trouble breathing, open-mouth breathing while resting, or blue/gray gums — stop reading and go to an emergency vet immediately.
Type 1: Kennel Cough (Infectious Tracheobronchitis)
The sound: A dry, hacking “goose-honk” cough, often followed by gagging or retching.
Kennel cough is the common cold of the dog world — highly contagious but usually not dangerous. It’s caused by a mix of viruses and bacteria (including Bordetella bronchiseptica), and it spreads anywhere dogs gather: daycare, boarding kennels, dog parks, and even the vet’s waiting room.
Symptoms:
- Persistent dry cough
- Retching or gagging after coughing
- Usually no fever or lethargy (dog acts normal otherwise)
Treatment: Most cases resolve on their own in 1-2 weeks. Your vet may recommend cough suppressants or antibiotics if a bacterial infection is suspected.
Prevention: The Bordetella vaccine (often required for boarding) significantly reduces risk but doesn’t guarantee immunity.
When to worry: If your dog stops eating, develops a fever, or seems lethargic — it could be pneumonia.
Type 2: Canine Influenza (Dog Flu)
Think of it like: Human flu, but for dogs.
Canine influenza is a highly contagious viral infection that spreads through respiratory droplets (coughing, sneezing, shared water bowls). Unlike kennel cough, dog flu often comes with full-body symptoms.
Symptoms:
- Soft, moist cough (not dry like kennel cough)
- High fever (104°F+)
- Runny nose (clear to yellowish discharge)
- Lethargy and loss of appetite
Treatment: Supportive care — rest, fluids, and sometimes antibiotics for secondary bacterial infections. Severe cases may require hospitalization.
Prevention: A vaccine is available but not always part of core protocols. Ask your vet if your dog’s lifestyle warrants it (frequent boarding, daycare, or shows).
Pro tip: Dog flu can sometimes turn into pneumonia. If coughing persists beyond 7 days or breathing becomes labored, call your vet.
Type 3: Pneumonia in Dogs (Bacterial & Aspiration)
Pneumonia means inflammation in the lungs. It can be bacterial (after a cold or flu) or aspiration (inhaling food, vomit, or liquid).
Signs that differ from kennel cough:
- Fever
- Loss of appetite
- Lethargy (dog just wants to sleep)
- Difficulty breathing or rapid shallow breaths
- Crackling sounds when listening to the chest
Aspiration pneumonia risk factors: Dogs who eat too fast, vomit frequently, have swallowing disorders, or are recovering from surgery.
Treatment: Oral antibiotics for mild cases. Severe pneumonia may require hospitalization with IV fluids, oxygen therapy, and nebulization.
Recovery time: 2-4 weeks with proper care. Follow up with chest X-rays to confirm healing.
Type 4: Brachycephalic Airway Syndrome (Flat-Faced Breeds)
If you own a Bulldog, Pug, French Bulldog, Boston Terrier, or Boxer — this section is for you.
These adorable flat-faced breeds have a genetic predisposition to breathing problems. Their anatomy includes:
- Narrow nostrils (stenotic nares)
- An overly long soft palate
- A small trachea (windpipe)
What you’ll notice:
- Loud snoring or snorting, even when awake
- Gagging or retching after exercise or excitement
- Blue-tinged gums after exertion
- Collapsing or fainting in hot or humid weather
Management (no surgery):
- Keep your dog lean (extra weight is devastating for these breeds)
- Use a harness, never a collar (collars compress the trachea)
- Avoid midday heat and high humidity
- Limit intense exercise
Surgical options: Your vet may recommend nostril widening (alarplasty) or soft palate resection for severe cases. This can dramatically improve quality of life.
Type 5: Canine Distemper — A Vaccine-Preventable Killer
This is serious. Canine distemper virus attacks the respiratory, gastrointestinal, and nervous systems. Puppies and unvaccinated dogs are most at risk. It is often fatal.
Early symptoms (look like a cold):
- Watery or pus-like eye discharge
- Coughing, sneezing
- Fever
As it progresses:
- Vomiting and diarrhea
- Thickening of nose and foot pads (hence “hard pad disease”)
- Seizures, muscle twitches, paralysis
Treatment: There is no cure. Vets provide supportive care (fluids, anti-seizure meds, antibiotics for secondary infections). Even with treatment, many dogs die or have permanent nerve damage.
Prevention is everything: Puppies need a series of distemper vaccinations starting at 6-8 weeks. Adult dogs need boosters every 1-3 years depending on the vaccine.
If you adopt a dog of unknown vaccination history, assume they are unprotected and see a vet immediately.
Type 6: Aspiration Pneumonia (When Something Goes Down the Wrong Pipe)
We mentioned aspiration pneumonia briefly in Type 3, but it deserves its own spotlight because it’s a medical emergency.
Aspiration pneumonia occurs when a dog inhales foreign material — food, water, vomit, or even stomach acid — into the lungs. The result is severe inflammation and infection.
Common causes:
- Eating or drinking too fast
- Vomiting and inhaling while unconscious
- Laryngeal paralysis (common in older Labs)
- Megaesophagus (a condition where the esophagus doesn’t move food properly)
Symptoms (sudden onset):
- Violent coughing or gagging after eating/drinking
- Labored breathing or wheezing
- Blue-tinged gums (cyanosis)
- Nasal discharge that looks like food or liquid
What your vet will do: Chest X-rays, oxygen therapy, broad-spectrum antibiotics, and sometimes suction to remove material from the airways.
Prognosis: Good with aggressive treatment, but aspiration pneumonia can be fatal if untreated.
Type 7: Pulmonary Fibrosis in Older Dogs (Especially Westies)
Pulmonary fibrosis is a chronic, progressive lung disease where lung tissue becomes scarred and stiff. Over time, the lungs can’t expand properly, and oxygen exchange fails.
Who gets it? Most common in older terriers, especially West Highland White Terriers (Westies). Also seen in older dogs of any breed with chronic bronchitis.
Early signs (easy to miss):
- Mild cough that slowly worsens
- Gets tired more easily on walks
- Breathing seems “effortful” even at rest
Late signs:
- Blue-tinged gums
- Fainting episodes
- Open-mouth breathing while lying down
Treatment (no cure, but manageable):
- Oxygen therapy during flare-ups
- Bronchodilators and corticosteroids to reduce inflammation
- Weight management to reduce breathing effort
- Avoiding smoke, dust, and strong fragrances
Life expectancy: Months to years, depending on severity. Focus on quality of life and comfort.
FAQ’s-7 Types of Canine Respiratory Issues
Can a dog die from kennel cough?
Rarely, but yes. Kennel cough itself is usually mild, but it can progress to pneumonia — especially in puppies, senior dogs, or those with weakened immune systems. If your dog stops eating, develops a fever, or seems lethargic, see a vet immediately.
How long is a dog contagious with a respiratory infection?
It varies by condition. Kennel cough: 7-14 days after symptoms resolve. Canine influenza: up to 4 weeks. Distemper: up to 3 months after recovery. Always follow your vet’s guidance and keep sick dogs away from others for at least 2 weeks after coughing stops.
Can I give my dog human cough medicine?
No, never without a vet’s approval. Many human medications — including some cough syrups containing xylitol or acetaminophen — are toxic to dogs. Your vet may prescribe dog-safe cough suppressants like hydrocodone or butorphanol if appropriate.
Why does my dog sound like he’s choking but nothing comes up?
This is often a “reverse sneeze” — a harmless spasm common in small and brachycephalic breeds (like Pugs and Shih Tzus). However, if it’s new, persistent, or followed by blue gums, it could indicate a collapsing trachea, laryngeal paralysis, or a foreign object. Record a video to show your vet.
Is dog flu contagious to humans or cats?
No. Canine influenza viruses (H3N8 and H3N2) only affect dogs. However, cats can catch the H3N2 strain in rare cases (reported in shelters). Humans are not at risk from dog flu.
How much does treatment for aspiration pneumonia cost?
Mild cases: $200–$500 (antibiotics + X-rays). Severe cases requiring hospitalization, oxygen, and IV fluids: $1,500–$5,000+ depending on your location and length of stay. Pet insurance often covers this if there are no pre-existing respiratory conditions.
Should I still vaccinate my dog if he never goes to daycare or dog parks?
Yes, but possibly a reduced set. Distemper is non-negotiable — it’s airborne and can be carried on shoes or clothing. Kennel cough (Bordetella) and canine influenza vaccines are lower priority for strictly homebound dogs. Ask your vet for a lifestyle-based vaccine plan.
Final Thoughts: Protecting Your Dog’s Breathing Health
You know your dog better than anyone. If something feels “off” with their breathing — trust that instinct.
Your action plan:
- Vaccinate — Distemper, Bordetella, and canine influenza vaccines save lives.
- Know your breed’s risks — Flat-faced dogs need extra precautions.
- Act fast on symptoms — A mild cough today can be pneumonia next week.
- Use a harness — Especially for brachycephalic or older dogs.
One last thing: Regular vet checkups matter. Your vet can catch early signs of heart disease, lung tumors, or chronic bronchitis before they become emergencies.
