Cats remove loose hair from their coats with their tongue. That is why they cough up hairballs. Since the hair clumps together in the cat’s belly, they cough up hairballs.

TAGS: 1. do all cats cough up hairballs
2. cats cough up blood
3. cats throw up hairballs
4. do dogs cough up hairballs
5. why do cats cough up hairballs generally