The Complete Guide to Hairballs in Cats: Causes, Prevention & Treatment

July 19, 2026

The Complete Guide to Hairballs in Cats: Causes, Prevention & Treatment

Almost every cat owner has seen it happen. Your cat suddenly crouches down, makes repeated gagging sounds, and eventually coughs up a wet tube of fur on your favorite carpet.

While hairballs are common, they're not something you should simply ignore. Frequent hairballs may indicate excessive shedding, poor grooming habits, dehydration, digestive problems, or an underlying medical condition.

The good news is that most hairballs can be prevented with proper grooming, good nutrition, healthy hydration, and a few simple changes to your cat's daily routine.

In this complete guide, you'll learn why cats develop hairballs, which cats are most at risk, how to recognize warning signs, the best prevention strategies, and when it's time to contact your veterinarian.

Quick Answer

Hairballs form when cats swallow loose fur while grooming themselves. Most hair passes safely through the digestive tract, but some collects in the stomach and forms a hairball that is eventually vomited. Occasional hairballs are normal, but frequent hairballs, repeated gagging without producing a hairball, or signs of illness require veterinary attention.

Hairballs: Normal or Dangerous?

Usually Normal	Needs Veterinary Attention
Occasional hairball every few weeks or months	Repeated gagging without producing a hairball
Cat returns to normal immediately afterward	Loss of appetite
Normal eating and drinking	Vomiting several times a day
Bright, active behavior	Lethargy, weakness, or abdominal pain
No weight loss	Constipation or signs of intestinal blockage

What Exactly Is a Hairball?

A hairball, known medically as a trichobezoar, is a collection of swallowed hair that accumulates inside your cat's stomach.

Cats spend up to half of their waking hours grooming themselves. Their rough tongues, covered with tiny backward-facing structures called papillae, work like natural combs that remove loose fur from the coat.

Every time your cat grooms, some of this loose hair is swallowed.

Fortunately, most swallowed hair moves safely through the digestive system and leaves the body in the stool. Hairballs develop only when some of that fur remains in the stomach instead of passing through normally.

How Do Hairballs Form?

Hairballs don't appear overnight. They develop gradually as swallowed hair accumulates faster than the digestive system can eliminate it.

The process usually looks like this:

Your cat grooms and swallows loose fur.
Most hair passes through the intestines.
Some hair remains in the stomach.
The trapped hair gradually sticks together.
The stomach eventually expels the hairball through vomiting.

Occasional hairballs are a natural consequence of normal grooming. Problems arise when they become frequent, unusually large, or cannot be expelled.

Why Do Cats Get Hairballs?

Hairballs are the result of normal grooming, but several factors can increase the amount of hair your cat swallows.

The most common causes include:

Heavy seasonal shedding
Long or thick coats
Overgrooming caused by stress
Skin allergies
Fleas or other parasites
Poor coat condition
Lack of regular brushing

If your cat seems to be losing much more fur than usual, read our guide Why Is My Cat Shedding So Much? 11 Common Causes to identify possible reasons behind excessive shedding.

Which Cats Are Most at Risk?

Although any cat can develop hairballs, some are naturally more likely to experience them.

Risk Factor	Why It Increases Hairballs
Long-haired breeds	They swallow much more fur while grooming.
Heavy seasonal shedders	More loose hair enters the digestive tract.
Older cats	Years of grooming make hairballs more common.
Cats that overgroom	They swallow significantly more hair.
Indoor cats	Year-round shedding often increases hair intake.

Fortunately, one of the easiest ways to reduce swallowed hair is regular brushing. Our guide How Often Should You Brush Your Cat? A Complete Grooming Guide explains how often different coat types should be groomed for the best results.

Symptoms of Hairballs

Most hairballs are expelled without causing serious problems. However, knowing the difference between a normal hairball episode and signs of illness is essential.

Common symptoms include:

Repeated gagging or retching
Coughing or hacking sounds
Vomiting a tube-shaped hairball
Occasional loss of appetite before passing the hairball
Temporary restlessness

Most cats return to normal immediately after expelling a hairball.

Warning Signs of a Serious Hairball Problem

Hairballs should not become a frequent or severe problem.

Contact your veterinarian immediately if your cat experiences:

Repeated unsuccessful gagging
Vomiting without producing a hairball
Loss of appetite lasting longer than 24 hours
Lethargy or weakness
Constipation
Abdominal swelling or pain
Difficulty breathing
Weight loss

These symptoms may indicate an intestinal blockage or another medical condition requiring prompt veterinary treatment.

How to Prevent Hairballs

The best treatment for hairballs is preventing them from forming in the first place.

Fortunately, most cats benefit from a few simple daily habits.

1. Brush Your Cat Regularly

Brushing removes loose hair before your cat has a chance to swallow it.

For many cats, this is the single most effective way to reduce hairballs.

A Steam Pet Grooming Brush gently removes loose fur while helping distribute natural oils for a healthier, shinier coat.

If you're unsure how often your cat should be brushed, read our complete guide How Often Should You Brush Your Cat?.

2. Reduce Excessive Shedding

The less loose hair your cat sheds, the less hair they swallow while grooming.

Maintaining a healthy coat through regular grooming, good nutrition, and parasite prevention significantly lowers the risk of hairballs.

Learn more in our article Why Is My Cat Shedding So Much? 11 Common Causes.

3. Encourage Healthy Hydration

Proper hydration supports normal digestion and helps swallowed hair move more efficiently through the digestive tract instead of remaining in the stomach.

Many cats naturally drink more when water is fresh and continuously moving.

A Smart Pet Water Fountain encourages healthy drinking habits while helping keep water clean and appealing throughout the day.

To learn whether your cat is drinking enough, read How Much Water Should a Cat Drink Per Day?.

4. Feed a High-Quality Diet

A balanced diet supports healthy skin, coat quality, and digestive function.

Some veterinarians may recommend specialized hairball-control diets or increased dietary fiber for cats that experience frequent hairballs.

Always consult your veterinarian before making major dietary changes.

5. Minimize Stress

Stress can lead to excessive grooming, causing your cat to swallow much more hair than usual.

Providing enrichment, interactive play, predictable routines, and quiet resting areas helps many cats feel more secure.

Hairball Prevention Checklist

Habit	Benefit
Regular brushing	Removes loose fur before it's swallowed.
Fresh drinking water	Supports healthy digestion.
Balanced nutrition	Promotes healthy skin and coat.
Parasite prevention	Reduces scratching and overgrooming.
Stress reduction	Helps prevent excessive grooming.
Routine veterinary care	Detects health problems early.

When Should You Call a Veterinarian?

Occasional hairballs are usually normal, but frequent episodes are not.

Schedule a veterinary examination if your cat:

Produces hairballs several times each month.
Frequently gags without bringing up a hairball.
Stops eating.
Vomits repeatedly.
Shows signs of dehydration.
Becomes unusually tired.
Develops constipation or abdominal pain.

According to guidance from the American Veterinary Medical Association (AVMA) and the Cornell Feline Health Center, persistent vomiting, repeated unsuccessful retching, or suspected intestinal blockage should always be evaluated by a veterinarian as soon as possible.

Treatment for Hairballs

Most occasional hairballs do not require medical treatment. Once the hairball is expelled, cats usually return to normal almost immediately.

However, if your cat experiences frequent hairballs, your veterinarian may recommend one or more of the following:

Regular grooming to reduce swallowed hair
Increasing water intake
A specialized hairball-control diet
Additional dietary fiber when appropriate
Hairball lubricant products recommended by a veterinarian
Treatment for any underlying medical condition causing excessive grooming

Never give human laxatives, mineral oil, or home remedies unless specifically instructed by your veterinarian. Some products can be dangerous for cats.

Common Myths About Hairballs

❌ Myth #1: Hairballs Are Completely Normal

Occasional hairballs are common, but frequent hairballs are not considered normal. Repeated episodes may indicate excessive shedding, overgrooming, digestive problems, or another underlying health issue.

❌ Myth #2: Long-Haired Cats Are the Only Cats That Get Hairballs

While long-haired breeds are at greater risk, short-haired cats can also develop hairballs—especially during seasonal shedding or if they groom excessively.

❌ Myth #3: Hairballs Can't Be Prevented

Although you can't eliminate the risk entirely, regular brushing, proper hydration, and a healthy diet can significantly reduce the number of hairballs many cats experience.

Frequently Asked Questions

How often should cats get hairballs?

An occasional hairball every few weeks or months can be normal for some cats. If your cat is producing hairballs several times each month, it's worth discussing with your veterinarian.

Are hairballs dangerous?

Most hairballs are harmless. However, repeated unsuccessful retching, vomiting without producing a hairball, constipation, abdominal pain, or loss of appetite can indicate an intestinal blockage, which requires immediate veterinary care.

Can brushing really prevent hairballs?

Yes. Regular brushing removes loose fur before your cat swallows it, making grooming one of the most effective ways to reduce hairball formation.

Do indoor cats get more hairballs?

Many indoor cats shed more evenly throughout the year because they live in climate-controlled environments with artificial lighting. This can increase the amount of hair swallowed during grooming.

Does drinking more water help prevent hairballs?

Healthy hydration supports normal digestion, allowing swallowed hair to pass through the digestive tract more easily. If your cat rarely drinks, our guide Why Isn't My Cat Drinking Water? 12 Common Reasons explains practical ways to encourage better hydration.

What is the best way to reduce hairballs naturally?

A combination of regular brushing, balanced nutrition, adequate hydration, parasite prevention, and stress reduction provides the best long-term strategy for minimizing hairballs.

Final Thoughts

Hairballs are a natural consequence of grooming, but they shouldn't become a frequent part of your cat's life.

By removing loose fur before it's swallowed, encouraging healthy hydration, and supporting good digestive health, you can greatly reduce the likelihood of hairballs while improving your cat's overall well-being.

Most importantly, pay attention to changes in your cat's grooming habits. Frequent hairballs, repeated gagging, or signs of illness should never be ignored, as they may indicate a more serious problem that requires veterinary care.

Reduce Hairballs Before They Start 🐱

Removing loose fur before your cat swallows it is one of the easiest ways to help prevent hairballs.

Support a healthier coat with our grooming essentials.

🖌️ Steam Pet Grooming Brush

💧 Smart Pet Water Fountain

Healthy grooming and proper hydration work together to support your cat's digestive health.

Trusted Sources

Last updated: July 2026 • This guide was reviewed using veterinary resources from the AVMA, Cornell Feline Health Center, AAFP, ISFM, and the Merck Veterinary Manual to ensure accurate, evidence-based information.

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