Reverse Sneezing in Dogs: What It Looks Like and When to Worry

By Dr Duncan Houston

A sudden series of loud inward snorts can sound like choking. Many episodes are reverse sneezing, but it is important not to label every noisy breath harmless.

Quick Answer

Reverse sneezing is a brief bout of rapid inward nasal breaths, often with the neck extended and the dog otherwise alert. Many episodes settle on their own, with normal breathing afterwards. New, frequent, prolonged or changing episodes, especially with discharge or illness, need veterinary assessment.

Why does it happen?

Irritation around the nose and throat can trigger the reflex. Dust, scents, excitement and other irritants may contribute. Sometimes investigation identifies infection, foreign material, nasal mites, an anatomical problem or another underlying disorder.

A video and history can help distinguish reverse sneezing from coughing, gagging or airway noise. An apparent resemblance on a video is not enough to rule out respiratory disease.

Normal-looking episode or urgent problem?

What to do during an episode

1. Stop activity and keep the environment calm.
2. Loosen pressure from walking equipment without letting the dog escape.
3. Allow a comfortable posture and observe breathing.
4. Record briefly if safe, noting duration and possible triggers.
5. Contact a vet if uncertain, or immediately if distress persists.

Do not block the nostrils, force the mouth open, squeeze the throat or offer food and water during a breathing episode. These interventions are unnecessary for many self-limiting episodes and can be unsafe if the problem is something else.

When is this an emergency?

A dog who cannot move air comfortably, is weak or collapses needs urgent care, regardless of whether previous episodes were reverse sneezing. Keep handling minimal and do not delay transport to try internet manoeuvres.

Common mistakes

• Assuming a known reverse sneeze explains every future noise.
• Giving human decongestants or antihistamines without advice.
• Ignoring persistent one-sided discharge or blood.
• Using a fixed number of episodes as the only reason to seek help.

Reducing triggers

Avoid smoke and strong sprays, reduce excessive pressure around the neck and follow treatment for any diagnosed cause. Keep a simple episode log. Flat-faced dogs with broader breathing problems need an airway assessment rather than accepting all noise as normal.

Frequently asked questions

Does reverse sneezing always need medication?

No. Occasional episodes may need no treatment, while an underlying cause needs specific care.

Can it be mistaken for choking?

Yes. If the dog is distressed or you are uncertain, contact an emergency clinic.

Should I film it?

A short video is useful if the dog is stable. Emergency care takes priority.

The reassuring feature is full comfortable recovery, not simply the familiar sound.

Further reading

• Cornell: reverse sneezing
• VCA: reverse sneezing in dogs
• Cornell: respiratory distress

For more practical guidance on caring for your dog, explore ASK A VET™. If your dog needs urgent treatment, contact your veterinary clinic directly.