A–Z topic · H
Hairballs in cats
Quick answer
Hairballs form when swallowed fur accumulates in the stomach. Occasional vomiting of a hair cylinder is normal for many cats, especially long-haired breeds. See your vet if your cat **vomits hairballs more than once a week**, retches without producing anything, loses appetite, or has constipation — these may signal obstruction or another illness.
Key takeaways
- Occasional hairballs — once every week or two in long-haired cats — can be normal. Frequent vomiting, retching without producing a hairball, or appetite loss is not normal and needs a vet check.
- Regular brushing, hairball-control diets or gels, and ensuring adequate hydration help. Long-haired cats benefit from daily grooming.
- Large hairballs can obstruct the stomach or intestine, causing repeated vomiting, constipation, and lethargy. Surgical removal is occasionally required for impaction.
The full guide
Causes, symptoms, treatment options and when to call your vet — in the complete plain-English guide.
Frequently Asked Questions
- Are hairballs normal in cats?
- Occasional hairballs — once every week or two in long-haired cats — can be normal. Frequent vomiting, retching without producing a hairball, or appetite loss is not normal and needs a vet check.
- How do I prevent hairballs in my cat?
- Regular brushing, hairball-control diets or gels, and ensuring adequate hydration help. Long-haired cats benefit from daily grooming.
- Can hairballs cause blockage in cats?
- Large hairballs can obstruct the stomach or intestine, causing repeated vomiting, constipation, and lethargy. Surgical removal is occasionally required for impaction.