Last Updated: 04/05/2026
Reverse Sneezing in Dogs
Heard a strange snort or honking sound from your dog? Learn all about reverse sneezing in dogs, what triggers it, simple ways to help them, and when to visit the vet.
Author: Dr Teagan Lever BVSc (Hons)
Reading Time: 4 minutes - short read
Have you ever heard of reverse sneezing in dogs? Though it is a common occurence, it can be quite worrying to hear, with some people thinking their dog is having difficulty breathing. Rest assured it is usually fairly harmless. No doubt you may have discussed this happening with your vet and often pet parents try to video their dog making the sound rather than trying to describe this strange snort, gag, cough, sneeze noise that their dog makes! It is also commonly googled although many people don't quite know the term of this strange noise their dog is making!
What is reverse sneezing?
While a standard sneeze is a forceful pushing out (exhalation) of air, a reverse sneeze is the exact opposite: a sudden, forceful intake (inhalation) of air.
Here are the key facts about this sudden snort:
- The sound: It can sound quite alarming and similar to choking, but it is usually harmless.
- Cause: It is simply the body's way of clearing an irritant from the back of the throat.
- Duration: Episodes come on suddenly and are brief, usually ending within a minute.
- Timing: It can occur at any time, day or night.
- Affected pets: While it can affect any breed, age, or sex, it is most commonly seen in young to middle-aged smaller breeds.
Causes of reverse sneezing
Basically, any irritant to the nasal cavity, throat or sinuses can cause a reverse sneeze. The irritation results in a spasm in which the dog's neck will extend and the chest will expand as the dog tries harder to inhale air.
The common causes include:
- Allergies
- Nasal mites
- Foreign bodies (such as blades of grass)
- Secretions
- Nasal or sinus infections
- A growth in the nasal cavity or nasopharynx
- Anatomical issue (common with brachycephalic dogs)
- Idiopathic (no identifiable cause)
- Excitement
- Eating or drinking
- Pulling on the lead
Many cases of reverse sneezing are often termed "idiopathic" as there is no easily identifiable cause and the episodes, although sound scary at times, are often mild and self-limiting (resolve without treatment). Brachycephalic dogs (those with flat faces such as Pugs and Boxers), may often have an elongated soft palates, and occasionally this can get sucked into the throat when inhaling causing the reverse sneeze. For more information about respiratory issues in Brachycephalic dogs have a read of our article Brachycephalic airway syndrome in dogs. Smaller dogs seem to be more prone to reverse sneezing as well, probably due to their smaller throats.
If your dog tends to reverse sneeze when on the lead, have a read of our article How to stop your dog pulling on the lead.
Diagnosis of reverse sneezing
Diagnosis is usually based on pet parents witnessing an episode rather than formal testing.
- Identifying signs: Look for a series of sudden, forceful inhalations with the dog's neck extended.
- Reassurance: While the sound can be alarming and seem like respiratory distress, it is very rarely the case.
- When testing is needed: Occasional episodes typically do not require diagnostic investigation. However, consult a vet if the snorting episodes become frequent, persistent, or prolonged.
- The diagnostic process: If further investigation is required, a veterinarian will perform an initial physical examination of the mouth and throat and consider further diagnostics like X-rays, rhinoscopy, or upper airway endoscopy if necessary.
Treatment of reverse sneezing
Most episodes are brief and pass quickly, so medical treatment is rarely needed. However, here are a few simple ways to help your dog during an episode:
- Gentle throat massage: Gently stroking the neck can help relieve the spasm.
- Cover the nostrils: Lightly block the nostrils for a few seconds to encourage swallowing and stop the reflex.
- Stay calm: Offer gentle pats and speak in a soothing voice to help ease any distress.
Addressing the underlying cause
If episodes are frequent, a veterinarian can help identify the root cause. Treating triggers, such as environmental or food allergies, can help prevent future episodes from occurring.
Have a read of our articles What is the best dog food for skin allergies? and Why does my dog have sensitive, itchy skin?
Prognosis and prevention of reverse sneezing
The prognosis for reverse sneezing is typically very good, especially if the underlying trigger can be identified and managed.
Tracking and preventing episodes
- Keep a log: Note when episodes occur, how often they happen, their duration, and any other signs the dog may display.
- Address the trigger: Identifying and treating the root cause (such as environmental allergens) helps prevent future episodes.
Risk factors to watch for - certain pets are more prone to reverse sneezing:
- Smaller breeds
- Brachycephalic breeds: Flat-faced dogs are more susceptible to airway irritation.
- Overweight dogs: Excess body fat around the neck can compress the airways and trigger more frequent episodes. Managing a pet's weight can make a big difference!
For information about weight loss take a read of our article Tips to help your dog lose weight, and Obesity in dogs and cats.
Reverse Sneezing FAQs
Reverse sneezing may sound alarming, but it is typically a harmless and brief event. By keeping a dog calm and recording the episodes, you can better understand and manage the situation. When in doubt, consulting a veterinarian is always the best way to ensure a pet remains happy, healthy, and breathing easy.
References
Veterinary Partner, Reverse Sneezing in Dogs, https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4952493, accessed 2/11/22
Veterinary Information Network, Reverse Sneeze (Canine), https://vin.com/members/cms/project/defaultadv1.aspx?pid=607&id=5419224&f5=1, accessed 2/11/22
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History
Our experts continually monitor the health and wellness space and we update our articles when new information becomes available.
Tue 5 May 2026
Edited by Dr Gillian Hill BVSc (Hons)Dr Teagan Lever BVSc (Hons)
Head Veterinarian, BVSc (Hons)
Pet Circle's Head Veterinarian, Dr Teagan graduated from the University of Queensland in 2010 and went on to work in small animal and mixed practice in various locations around QLD & ACT before joining Pet Circle in early 2016. Dr Teagan has special interests in dermatology, nutrition and preventative health care. She feels privileged to witness the special bond people share with their pets on a daily basis and enjoys forming lasting relationships with pet parents and their fur children.
