What a cat cough is telling you
Coughing in cats is a reflex — the airway is irritated or inflamed, and the body is trying to clear it. That makes it a symptom, never a diagnosis, and PetMD's cause list is longer than most owners expect.
The sound offers clues but not answers: a goose-honk cough suggests a collapsing trachea, a dry, hacking cough fits bronchitis or heartworm disease, a wet cough suggests infection, and a persistent dry cough in a middle-aged or older cat is the classic asthma presentation (PetMD).
The usual suspects
- Asthma. Chronic allergic inflammation narrowing the airways — coughing, wheezing, difficulty breathing, a crouched posture with head and neck extended during attacks. Triggered by dust, smoke, pollen, dusty litter, scented products (PetMD).
- Upper respiratory infection. Feline viral rhinotracheitis and friends inflame the airway; the cough can be dry or wet (PetMD).
- Bronchitis. Inflammation of the small airways; classically a dry, hacking cough (PetMD).
- Heartworm disease. Even indoor cats are at risk via mosquitoes; the cough is typically dry and hacking (PetMD).
- Parasites. Roundworms and lungworms migrating through the body cause inflammation and coughing (PetMD).
- Allergies and foreign objects. Pollen or something inhaled — dry cough either way (PetMD).
- Collapsing trachea and tumors. Less common in cats than dogs, but both belong on the differential (PetMD).
Cough, reverse sneeze, or vomit?
Cats confuse owners with three sounds that overlap. A cough comes from the airway. A reverse sneeze is a repetitive snorting noise, usually with the lips flaring outward — different mechanism, different concern (PetMD). Vomiting and retching involve the neck with a propulsive motion from the abdomen; a cough does not (PetMD).
This matters because “my cat coughs” and “my cat gags and vomits” point the vet in different directions. If you can't tell them apart, PetMD's advice is to take a video — it genuinely changes the diagnostic starting point.
When it's an emergency
PetMD's thresholds: an occasional cough or two in a cat who is otherwise eating, drinking and acting normal can be monitored at home. A persistent cough earns the next available appointment.
But these mean emergency care — not tomorrow, now (PetMD):
- Bluish gums. A sign the body isn't getting enough oxygen.
- Abnormal or labored breathing, open-mouth breathing, or breathing driven from the belly.
- Blood-tinged mucus or coughing up blood — always immediate, regardless of other signs.
- Lethargy alongside the cough.
At the appointment, expect the vet to listen closely to heart and lungs, possibly rub the trachea gently to hear the cough, and then move to chest X-rays, bloodwork and a heartworm test. If asthma is suspected, a transtracheal wash or bronchoalveolar lavage under anesthesia can confirm it (PetMD).
Frequently asked questions
Why does my cat keep coughing like something is stuck in her throat?
Cats often cough in a way that sounds like gagging — especially with asthma, where the cough can look like trying to vomit (PetMD). The overlap is real, which is why vets ask for a video rather than a description.
Can indoor cats get heartworm?
Yes. Heartworm is transmitted by mosquitoes, which get indoors, and it causes a dry, hacking cough in cats (PetMD). This is one reason heartworm testing is part of the coughing-cat workup.
Is feline asthma curable?
No, but it is very manageable. PetMD describes daily anti-inflammatory medication, sometimes with bronchodilators like terbutaline or albuterol, with an inhaler as the safest long-term delivery. Reducing triggers — dust, smoke, dusty litter, scented products — is part of the plan.
When should I take my coughing cat to the emergency vet?
Immediately if you see bluish gums, abnormal or open-mouth breathing, blood-tinged mucus, or lethargy with the cough. Coughing up blood always qualifies for immediate attention (PetMD).