Reverse Sneezing in Dogs: The Strange Scary Sound That’s Usually Harmless

Few things are more alarming than hearing your dog suddenly make a loud snorting, honking noise while extending their neck and seeming unable to catch their breath. Many owners fear their pet is choking or having trouble breathing. In many cases, however, the culprit is something called reverse sneezing, a common and usually harmless condition in dogs.

What Is Reverse Sneezing?

Reverse sneezing is a sudden, involuntary spasm of the throat and soft palate. During an episode, a dog forcefully pulls air inward through the nose, creating a distinctive snorting or honking sound.

Unlike a normal sneeze, where air is expelled out of the nose, reverse sneezing involves rapid inhalation through the nose.

Episodes typically last anywhere from a few seconds to a minute and often resolve on their own without treatment.

What Does Reverse Sneezing Look Like?

During an episode, your dog may:

• Stand still with elbows spread apart

• Extend their neck

• Make loud snorting, honking, or gagging noises

• Appear anxious or startled

• Repeatedly inhale through the nose

Although it can look dramatic, dogs remain conscious, alert, and return to normal immediately afterward.

What Causes Reverse Sneezing?

Reverse sneezing occurs when something irritates the tissues in the nose or throat. Common triggers include:

Allergies and Environmental Irritants

• Dust

• Pollen

• Perfumes/deodorizers/essential oils

• Household cleaners

• Smoke

  
  

Excitement or Exercise

Some dogs experience episodes after playing, exercising, or becoming overly excited.

Sudden Temperature Changes

Moving from a warm home into cold air, or vice versa, can occasionally initiate an event.

Nasal or Airway Conditions

Reverse sneezing may be associated with:

• Nasal mites

• Respiratory infections

• Nasal foreign bodies (such as grass awns)

• Nasal polyps or masses

Which Dogs Are Most Commonly Affected?

Reverse sneezing can occur in any dog, but it is seen more frequently in:

• Small and toy breeds

• Brachycephalic (short-nosed) breeds such as Pugs, Bulldogs, and Boston Terriers

• Dogs with allergies or chronic airway irritation

  
  

What Should You Do During an Episode?

The most important thing is to remain calm.

Helpful measures include:

• Speak calmly to your dog

• Gently massaging the throat

• Placing a finger over one nostril can stimulate swallowing and stop the event.

• Offering a small sip of water once the episode has passed

Most episodes stop on their own within seconds.

When Should You Seek Veterinary Care?

Occasional reverse sneezing is  not a cause for concern. However, a veterinary examination is recommended if:

• Episodes become more frequent or severe

• Your dog has nasal discharge, coughing, or difficulty breathing

• There is a sudden onset of episodes in an older dog

• Your dog seems ill between events

• The episode does not resolve quickly

• You suspect exposure to a foreign object or toxin

  
  

Is Reverse Sneezing Dangerous?

For most dogs, reverse sneezing is more frightening than harmful. While it can sound dramatic and distressing to owners, the condition itself is usually benign and does not affect long-term health.

The Bottom Line

Reverse sneezing is a common, usually harmless respiratory reflex that causes dogs to make sudden snorting or honking sounds while forcefully inhaling through the nose. Most episodes are brief and self-limiting. While occasional reverse sneezing is generally normal, increasing frequency or signs of illness should prompt a veterinary visit.

Knowing what reverse sneezing looks and sounds like can help you stay calm, reassure your dog, and recognize when professional evaluation may be needed.