Hairballs in Cats: When They're Normal — and When They're Not
The occasional hairball is natural; frequent ones — or gagging with nothing coming up — are warning signs. Causes, blockage red flags and 5 prevention habits.
Bulut Veterinary Clinic Medical Team
Reviewed by Mücahid Çiftçioğlu, DVM
Cats spend a big share of their day grooming; their barbed tongues collect loose hair like a comb, and much of that hair gets swallowed. Most of it passes through the digestive tract and leaves with the stool; what accumulates in the stomach occasionally comes back up as a hairball (a trichobezoar).
So hairballs are part of feline physiology. The real question is: how often is normal, and which picture calls for a vet? Knowing where the line sits means catching the rare but serious intestinal blockage early.
What's normal?
In a healthy short-haired cat, one or two hairballs a month is considered ordinary; long-haired cats and heavy shedding seasons can push that slightly higher. The key clue: a cat who brings up a hairball goes right back to normal — appetite intact, play resumed.
Despite the name, a hairball isn't round: it's cylindrical, shaped by its trip up the oesophagus. Don't confuse that damp cylinder of hair with vomit containing food or fluid — the two mean different things.
These signs cross the 'normal' line
- Hairballs more often than about once a week
- Repeated gagging or retching with NOTHING coming up — the most important red flag
- Loss of appetite, lethargy, weight loss
- Frequent vomiting beyond hairballs (food, fluid or bile)
- Constipation, less stool than usual, or stool packed with hair
- A dull, matted coat, or thinning/bald patches from licking (a sign of overgrooming)
The worst-case scenario: intestinal blockage
Rarely, a large mass of hair moves from the stomach into the intestine and blocks it. A blocked cat retches or vomits repeatedly, stops eating, fades quickly, and passes less stool or none at all. This is an emergency: diagnosis comes from an exam and imaging; some cases resolve with medical support, others need surgery.
"It's just a hairball, she'll get it up eventually" is the riskiest possible response. If the retching keeps repeating and nothing comes up, come in the same day — we're open 24/7.
What's behind frequent hairballs
Frequent hairballs usually trace back to one of two questions. First: why is the cat swallowing more hair than normal? Stress, itchy skin conditions, external parasites and allergies all drive overgrooming. Second: why isn't the swallowed hair passing through? Slowed gut motility and intestinal disease make the normal exit route harder.
In other words, frequent hairballs are usually not the disease itself but the visible tip of something underneath. At the exam we check the skin and coat, and run stool or blood tests where needed to find the cause.
Prevention at home: 5 habits that work
- Regular brushing: a few times a week for short-haired cats, daily for long-haired — hair caught in the brush can never become a hairball
- Brush more often during shedding seasons; never tear out mats — let our groomers shave or work them out safely
- Use a malt paste or hairball-control food, in consultation with your vet
- Encourage drinking: fresh water, ideally a fountain, and some wet food help the gut move hair along
- If there's overgrooming, hunt for the stressor: a new home, a new pet, boredom — play and enrichment ease compulsive grooming
Frequently asked questions
My cat never brings up hairballs; is that a problem?
No — it's usually a good sign: the swallowed hair is passing out with the stool as it should. The problems are hairballs becoming frequent, or gagging without producing one.
Should malt paste be given every day?
It depends on the product and the cat; it's typically used more during shedding seasons. Follow the label and your vet for amount and frequency. And remember: malt complements brushing — it doesn't replace it.
My cat is gagging but nothing comes up; what should I do?
If it keeps repeating, come in the same day. What looks like a 'stuck hairball' can actually be asthma, a foreign object or a blockage — all three need prompt attention.
Related services
If hairballs have become frequent, or your cat is gagging without bringing one up, it's time for an exam. Get in touch — we're open 24/7.
This article is for general information only and is not a substitute for a veterinary examination. Always consult your veterinarian about decisions concerning your pet's health.