Few sounds make a cat owner move faster than the retching that signals an incoming hairball. They are unpleasant to witness and to clean, but an occasional one is a normal by-product of how cats keep themselves clean. The trouble starts when hairballs become frequent, because that usually points to something worth changing, whether it is grooming, diet, or occasionally an underlying issue that needs a vet.
Understanding why hairballs form makes the prevention obvious, so it is worth a moment on the mechanics before the fixes.
Why hairballs form
Cats groom meticulously, and their tongues are covered in tiny backward-facing barbs that catch loose fur. Most of that fur passes harmlessly through the gut, but some collects in the stomach and is eventually brought back up as a damp cylinder of hair. Long-haired cats, heavy groomers, and cats during seasonal moults produce the most. A cat that suddenly grooms far more than usual may be doing so out of stress, skin irritation, or discomfort, so a jump in hairballs is sometimes a clue rather than just a nuisance.
Grooming: the biggest lever
The fur a cat cannot swallow is fur it never has to cough up, which makes regular brushing the single most effective step.
- Brush long-haired cats daily and short-haired cats a few times a week, more during moulting seasons.
- Use a brush suited to the coat; a de-shedding tool can remove far more loose undercoat than a basic comb.
- Keep sessions short and pleasant so the cat tolerates them, building up gradually with a wary cat.
Grooming is also a quiet moment to check the skin and coat for problems, and a content, well-handled cat is part of the wider picture in our guide to keeping indoor cats happy.
Diet and hydration
What a cat eats affects how smoothly fur moves through the gut. Adequate fibre helps carry hair through the digestive system, and several diets are formulated specifically to reduce hairballs. Good hydration supports digestion too, and many cats drink too little; a water fountain or some wet food can help. Specialised hairball diets and pastes exist, but it is worth asking your vet before changing food or using a remedy, particularly for a cat with other health needs.
Reduce stress grooming
Some cats over-groom when anxious, which increases hairballs and can thin the coat. If a cat is grooming compulsively, look at what might be unsettling it, a new pet, a change at home, boredom, and address the cause rather than just the symptom. The calming approaches in our piece on reducing pet anxiety naturally can help, and enrichment that occupies a bored cat reduces the idle over-grooming that feeds the problem.
When a hairball is more than a hairball
Most hairballs are harmless, but some signs need prompt veterinary attention rather than home management. Repeated unproductive retching, vomiting without producing a hairball, a swollen or painful belly, lethargy, constipation, or loss of appetite can indicate a blockage or other illness, which is an emergency. Frequent hairballs despite good grooming also deserve a check-up. This article offers general guidance only; your vet should assess any cat that seems unwell.
Keeping them to a minimum
You will not banish hairballs entirely, and you do not need to; the goal is to keep them occasional rather than routine. Regular brushing does most of the work, supported by good hydration, a suitable diet, and attention to any stress driving over-grooming. Treat a sudden rise in hairballs, or any sign of a struggling, unwell cat, as a prompt to call the vet rather than something to wait out. Stay on top of the grooming and most cats trouble you with a hairball only now and then.
Frequently asked questions
How often is too often for hairballs?
An occasional hairball, every week or two or less, is generally considered normal. Several a week, or a noticeable increase, suggests grooming, diet, or stress needs attention, or that a vet should check for an underlying cause. Frequent retching without producing a hairball is more concerning and warrants prompt advice.
Do hairball remedies and treats work?
Hairball pastes, treats, and specialised diets can help some cats by easing fur through the gut, but results vary and they do not replace good grooming. Ask your vet before relying on a remedy, especially for a cat with other health conditions or one whose hairballs are frequent.
Can hairballs be dangerous?
Rarely, a mass of hair can cause a blockage, which is a serious emergency. Warning signs include repeated unproductive retching, vomiting, a painful belly, constipation, lethargy, or refusing food. If you see these, contact a vet promptly rather than waiting for the cat to pass it.
Why has my cat suddenly started getting hairballs?
A sudden increase often reflects more shedding, a moulting season, or increased grooming driven by stress, skin irritation, or boredom. Step up brushing and look at what may have changed. If it continues or the cat seems unwell, a vet visit can rule out skin or digestive problems.
This article offers general information for pet owners and is not a substitute for professional veterinary advice. If you are concerned about your pet’s health, consult a qualified veterinarian.
