Dog Reverse Sneezing: Causes, When to Worry & What to Do
Usually not serious
Quick answer
Reverse sneezing is a common, usually harmless reflex in dogs that sounds like loud snorting or honking. It happens when something irritates the soft palate and throat, causing rapid, forceful inhalation. Most episodes last seconds to a minute and resolve on their own.
Common causes
Irritants in the air
Dust, pollen, smoke, perfumes, cleaning products, or sudden temperature changes can trigger the reflex. Brachycephalic breeds (flat-faced dogs) are especially sensitive.
Excitement or pulling on the leash
Overexcitement during play or pressure on the throat from a collar can cause spasms. Switching to a harness helps reduce leash-related episodes.
Post-nasal drip or minor infections
Mild upper respiratory irritation from a cold or allergies can lead to reverse sneezing as the body tries to clear the throat.
Eating or drinking too fast
Rapid ingestion of food or water may cause temporary throat irritation that triggers an episode, especially in enthusiastic eaters.
When to see a vet
- Episode lasts longer than 2 minutes or occurs repeatedly in a short time
- Blue or pale gums, or your dog collapses
- Difficulty breathing between episodes or open-mouth breathing
- Nasal discharge with blood, or foul odor from the nose
- Lethargy, loss of appetite, or fever accompanying the episodes
- New onset in an older dog with no previous history
Home care tips
- Stay calm—your anxiety can worsen your dog's stress
- Gently massage the throat or briefly cover the nostrils to encourage swallowing
- Offer a small amount of water if your dog is interested
- Move to fresh air away from irritants like smoke or strong scents
- Use a harness instead of a collar to reduce throat pressure
Not sure how serious it is?
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FAQ
Is reverse sneezing dangerous for dogs?
Usually no. It's a benign reflex that looks dramatic but typically resolves quickly without harm. However, frequent or prolonged episodes, or those with other symptoms like lethargy or nasal bleeding, warrant a vet visit to rule out underlying issues.
How can I tell reverse sneezing from choking or coughing?
Reverse sneezing involves loud, rapid inward snorts with the head often extended. Choking usually includes pawing at the mouth, gagging, or inability to breathe. Coughing is typically a forceful outward expulsion of air. When unsure, seek immediate veterinary help.
Can I prevent reverse sneezing episodes?
You can reduce triggers by using a harness, avoiding smoke and strong scents, managing allergies, and slowing down enthusiastic eaters with puzzle feeders. Not all episodes are preventable, and occasional reverse sneezing is normal for many dogs.
Should I see a vet for occasional reverse sneezing?
Isolated, brief episodes in an otherwise healthy dog generally don't require a vet visit. Schedule an appointment if episodes become frequent, last longer, or are accompanied by other concerning signs like nasal discharge, weight loss, or behavior changes.
Are certain breeds more prone to reverse sneezing?
Yes. Brachycephalic breeds like Bulldogs, Pugs, and Shih Tzus have elongated soft palates and shorter nasal passages, making them more susceptible. Small and toy breeds also seem to experience it more frequently than large breeds.