Reverse sneezing in dogs is a respiratory reflex in which a dog rapidly and forcefully inhales air through the nose in a series of repeated snorts, which is the opposite of a normal sneeze, which expels air outward. It tends to happen suddenly, lasts anywhere from a few seconds to about a minute, and produces a loud honking or snorting sound that can stop even the most seasoned dog owner in their tracks. If you have witnessed it for the first time, it is easy to assume something is seriously wrong. In most cases, however, reverse sneezing is completely harmless and resolves on its own without any intervention. That said, there are situations where it warrants a closer look. Read on to learn what triggers reverse sneezing in dogs, which breeds are most prone to it, what you can do during an episode, and the specific signs that mean it is time to check in with your veterinarian.
What Is Reverse Sneezing in Dogs?
Reverse sneezing in dogs, known medically as paroxysmal respiration or inspiratory paroxysmal respiration, is a reflex that causes a dog to rapidly and forcefully inhale air through the nose. While a regular sneeze expels air outward, a reverse sneeze pulls air inward in a series of rapid snorts or gasps.
During a dog reverse sneezing episode, the dog typically stands still, extends their neck, and produces a repetitive, loud snorting sound. Their chest may expand visibly with each rapid inhalation. The episode usually lasts anywhere from a few seconds to about a minute, and most dogs return to completely normal behavior immediately afterward.
What Does Dog Reverse Sneezing Sound Like?
The sound of reverse sneezing in dogs is distinctive and can be startling if you have never heard it before. Many owners describe it as a honking, snorting, or gagging sound, sometimes compared to a goose honking or a pig snorting. It can also resemble a dog choking or struggling to breathe, which is why so many owners rush to the vet the first time they witness it.
If you are unsure whether what you are witnessing is reverse sneezing, recording a short video on your phone is an excellent idea. Our team at Chino Valley Animal Hospital can review the video and quickly confirm whether what you are seeing is a reverse sneeze or something that warrants further evaluation.
What Causes Reverse Sneezing in Dogs?
Reverse sneezing is triggered by irritation or inflammation of the soft palate or nasopharynx. The body responds by trying to clear the irritation through rapid inhalation. There are several common triggers for dog reverse sneezing:
- Excitement or rapid activity changes
- Pulling on a leash or collar around the neck
- Inhaling irritants such as dust, pollen, perfume, or smoke
- Eating or drinking too quickly
- Post-nasal drip from allergies or mild respiratory irritation
- Foreign material near the back of the throat
- Environmental allergens
In some dogs, reverse sneezing occurs occasionally and without any identifiable pattern. In others, it happens regularly in certain situations, such as when they wake up or go outside into cold air. Neither pattern is inherently concerning on its own.
Which Dogs Are More Prone to Reverse Sneezing?
While any dog can experience reverse sneezing, some are more prone to it due to their anatomy. Brachycephalic breeds, those with short noses and flat faces, are among the most commonly affected. This includes breeds like Bulldogs, Pugs, Boston Terriers, Boxers, and Shih Tzus, which have naturally narrower airways and more soft palate tissue.
Small breeds with longer soft palates relative to their airway size, such as Beagles and Chihuahuas, are also frequently seen with reverse sneezing episodes. Large breeds are not immune either. Labrador Retrievers and other bigger dogs can reverse sneeze too, particularly if they are prone to allergies or live in environments with dusty air.
Is Dog Reverse Sneezing Dangerous?
In the vast majority of cases, reverse sneezing in dogs is not dangerous. It is an involuntary reflex, not a disease or a sign of a serious respiratory condition. Most dogs experience no distress during an episode and are back to normal within moments.
However, reverse sneezing can occasionally be a symptom of an underlying condition, particularly when it becomes frequent, worsens over time, or is accompanied by other signs. In those situations, a veterinary evaluation is warranted.
When Is Reverse Sneezing a Sign of Something More Serious?
Schedule a vet visit if your dog’s reverse sneezing episodes are becoming more frequent or more severe, if episodes are accompanied by nasal discharge, nosebleeds, facial swelling, or difficulty breathing, or if your dog seems distressed or disoriented during or after the episode. These signs can point to nasal polyps, nasal mites, a foreign object in the nasal passage, or a structural abnormality that needs attention.
What Should You Do During a Reverse Sneezing Episode?
Most reverse sneezing episodes in dogs resolve on their own without any intervention. The best thing you can do is stay calm so your dog stays calm. Your anxiety can amplify their reaction. Here are a few things that may help an episode pass more quickly, according to veterinary guidance:
- Gently massaging your dog’s throat
- Briefly covering the nostrils with your hand to encourage swallowing, which can reset the reflex
- Speaking to your dog calmly and quietly
- Moving your dog away from any potential irritant, such as air freshener or cigarette smoke
None of these steps are medically necessary for a typical reverse sneeze, but many owners find them helpful for ending the episode faster and calming both themselves and their dog.
How Veterinarians Evaluate Reverse Sneezing in Dogs
If your dog’s reverse sneezing is frequent or accompanied by other signs, our veterinary team at Chino Valley Animal Hospital will conduct a thorough physical examination. This may include an assessment of the nasal passages, throat, and airway, as well as a review of your dog’s health history and potential environmental triggers.
In some cases, additional diagnostics such as rhinoscopy (a scope of the nasal passages), imaging, or allergy testing may be recommended. If an underlying cause is identified, treatment targets that cause specifically.
Can Allergies Cause Reverse Sneezing in Dogs?
Yes. Allergies are one of the more common underlying contributors to frequent reverse sneezing in dogs. Dogs with environmental or seasonal allergies may experience post-nasal drip and irritation that triggers reverse sneezing episodes more regularly. If your dog’s reverse sneezing tends to worsen at certain times of year or in certain environments, allergies are worth discussing with your veterinarian.
Reverse Sneezing vs. Coughing, Choking, and Collapsing Trachea
Because dog reverse sneezing can look similar to other respiratory events, it is worth understanding the key differences. Coughing typically involves a forceful expulsion of air from the lungs, often with a deep, chesty sound. Choking is usually more acute and accompanied by panic, pawing at the mouth, or loss of consciousness in severe cases. Collapsing trachea, a condition more common in small breeds, produces a persistent honking cough rather than episodic reverse sneezing.
These distinctions matter because collapsing trachea and choking require different levels of veterinary urgency than a routine reverse sneezing episode. When in doubt, contact your vet. A video of the episode will help them make the distinction quickly.
What Dog Owners Should Know About Reverse Sneezing
Reverse sneezing in dogs is one of those things that tends to scare owners far more than it affects the dog. In most cases, your dog is completely unaware that anything unusual happened. Your biggest job is to observe, stay calm, and know when the pattern changes enough to warrant professional attention.
If you have questions about your dog’s reverse sneezing, or if the episodes have become more frequent or are accompanied by other symptoms, our team at Chino Valley Animal Hospital is here to help. Call (928) 636-4382 or book an appointment online.
