Both sounds are loud, both come in fits, and both are common in small dogs. They are not the same thing. One is a breathing reflex that starts in the nose. The other is a cough from a windpipe that flattens. Here is how to tell which one you are hearing.
Side by side
| Reverse sneeze | Tracheal collapse | |
|---|---|---|
| Direction of air | Pulled in, hard, through the nose | Pushed out, as a cough |
| Sound | Snorting, gagging, like trying to inhale a sneeze | Dry, harsh honk, like a goose |
| Body position | Stands still, head and neck stretched forward | Any position, often mid-walk or mid-greeting |
| How long | Short episodes that stop on their own | Fits that can repeat many times a day |
| Afterward | Back to normal at once | May keep breathing hard, may tire on walks |
| Common triggers | Dust, perfume, cleaners, pollen, excitement | Excitement, collar pressure, heat, eating or drinking, night |
| Over months | Comes and goes, no clear change | VCA calls the condition progressive |
What a reverse sneeze looks like
Dr. Jerry Klein, chief veterinarian at the American Kennel Club, describes it this way: the dog suddenly stands still, extends the head and neck, and takes rapid, repeated breaths in through the nose with snorting or gagging sounds. It is thought to be a response to irritation in the nose, throat or sinuses, often from dust, powders, perfumes or other allergens, and over-excitement can set it off.
It looks alarming and passes quickly. When it ends, the dog goes back to whatever it was doing as if nothing happened.
What a tracheal collapse cough looks like
In tracheal collapse the cartilage rings of the windpipe have weakened. The American College of Veterinary Surgeons lists a harsh, dry cough as the main sign, along with coughing when the dog is picked up or when the collar is pulled, tiring quickly, and wheezing when breathing in. It is most common in middle-aged and older toy breeds: Yorkshire terriers, Pomeranians, Chihuahuas and toy poodles.
The giveaway is repetition and triggers. The same honk returns every time the doorbell rings, every time the leash goes tight on a collar, every hot afternoon. Our guide to tracheal collapse covers the full picture.
Three questions that usually settle it
- Is the air going in or out? Snorting in through the nose points to a reverse sneeze. A cough pushes air out.
- Did the dog freeze with its neck stretched out? That stance is typical of a reverse sneeze.
- Does it happen when something presses on the neck? A cough when the collar pulls or when you pick the dog up is one of the signs ACVS lists for tracheal collapse.
What to do during each
During a reverse sneeze
The American Kennel Club suggests briefly holding the nostrils closed and gently massaging the throat to make the dog swallow, gently blowing toward the face, moving to fresh air, and talking in a calm voice. Most dogs need no medication.
During a coughing fit
Take any pressure off the neck: unclip a collar leash, or stop walking if the leash is tight. Keep things calm, since excitement feeds the cough. Move somewhere cool. Watch the gums. Pink is normal. Blue or gray, fainting, or breathing that will not settle is an emergency, so call your vet or an emergency clinic.
Record it for your vet
Neither sound tends to happen on cue in an exam room. A 20-second phone video, with sound, of a typical episode is often the most useful thing you can bring. Note when it happened and what the dog was wearing.