Reverse sneezing in cats is a sudden, involuntary spasm of the throat and mouth muscles that causes rapid, noisy inward breaths. It sounds alarming, like your cat is choking or struggling to breathe, but a typical episode lasts less than a minute and resolves completely on its own. While reverse sneezing is far more common in dogs, it does happen in cats, and knowing what it looks like (and what it isn’t) can save you a panicked trip to the emergency vet.
What Happens During an Episode
In a normal sneeze, air is forced out through the nose. In a reverse sneeze, the opposite happens: the throat narrows and the muscles of the mouth spasm, making it hard for your cat to inhale fully. To compensate, your cat takes a series of rapid, forceful snorts inward. You’ll hear short, repetitive breathing sounds that last several seconds to just under a minute.
Visually, it can look strange. Your cat’s neck may appear to suck inward with each breath, and many cats stretch their neck outward in a way that looks like they’re about to vomit. The whole thing starts suddenly, with no warning, and stops just as abruptly. Once the episode ends, your cat will typically go right back to whatever they were doing as if nothing happened.
Common Triggers
Reverse sneezing happens when something irritates the nasal passages or the back of the throat. In many cases, the trigger is environmental: dust, pollen, strong scents, cleaning products, or even a sudden change in temperature. Some cats have seasonal flare-ups, which suggests an allergic or contact irritant component. Eating or drinking too quickly can also set off an episode, as can excitement or pulling against a collar.
Cats with flat faces or unusually short nasal passages are more prone to reverse sneezing because their airway anatomy makes them more susceptible to irritation and inflammation. Dental disease, which is extremely common in cats, can also contribute by creating chronic irritation near the nasal passages. Less commonly, a foreign body (like a blade of grass inhaled while sniffing), nasal polyps, or upper respiratory infections from feline herpesvirus or calicivirus can trigger repeated episodes.
Reverse Sneezing vs. Feline Asthma
This is the distinction that matters most, because feline asthma requires treatment while an occasional reverse sneeze usually doesn’t. The key differences come down to timing, sound, and what your cat does with their body.
A reverse sneeze is an inhalation problem. The noisy, snorting sounds happen on the breath in, the episode starts and stops abruptly, and your cat is perfectly normal between episodes. Feline asthma, on the other hand, is an exhalation problem. Cats with asthma tend to crouch low with their neck extended, wheeze on the breath out, and may cough in a way that looks like they’re trying to hack up a hairball. Asthma episodes can last longer, recur frequently, and your cat may seem winded or lethargic afterward.
If you’re not sure which you’re seeing, try to capture a video on your phone. This is genuinely one of the most useful things you can bring to a vet appointment, because these episodes rarely happen on cue in the exam room.
What To Do During an Episode
The best thing you can do is stay calm and let it pass. Most episodes resolve within 30 to 60 seconds without any intervention. Resist the urge to restrain your cat or stick your fingers in their mouth. Some owners find that gently stroking their cat’s throat or briefly covering one nostril can encourage a swallow that resets the spasm, but honestly, most cats will stop on their own before you even have a chance to try.
If you notice a pattern, like episodes happening after you light a candle, use a particular litter, or spray air freshener, removing that trigger is the simplest fix.
When It Points to Something Bigger
An occasional reverse sneeze in an otherwise healthy cat is not a concern. But frequency and context matter. If episodes are happening multiple times a day, increasing over time, or accompanied by other symptoms like nasal discharge, bloody snot, facial swelling, loss of appetite, or noisy breathing between episodes, something else is going on.
Chronic upper respiratory disease in cats has a long list of possible causes. Viral infections, particularly feline herpesvirus, are the most common culprit behind persistent nasal symptoms. Bacterial infections, fungal infections, inflammatory polyps in the nasopharynx, and even nasal tumors (lymphoma being the most common type in cats) can all produce sneezing, reverse sneezing, and congestion that won’t quit.
For cats with frequent or worsening episodes, a vet will typically start with a physical exam and may recommend skull X-rays. If those aren’t conclusive, the next step is usually an exam under anesthesia, where the vet can directly look at the back of the throat and nasal passages using a small scope. Biopsies can be taken at the same time if anything unusual is found. These procedures sound involved, but they’re the most reliable way to identify or rule out structural problems like polyps, foreign objects, or masses.
Why Cats Get Overlooked
Most information about reverse sneezing focuses on dogs, and for good reason: dogs reverse sneeze far more often. Cats are less likely to do it, which means many cat owners have never heard of it and mistake it for choking, gagging, or an asthma attack. The flip side of this rarity is that when a cat does reverse sneeze repeatedly, it’s worth paying closer attention than you might with a dog. In dogs, chronic reverse sneezing is often just a quirk. In cats, frequent episodes are more likely to signal an underlying issue like asthma, allergies, or upper respiratory disease that benefits from a vet’s evaluation.