When a cat vomits a long string of hairballs, it's because the cat has a habit of licking its fur to clean itself. During this process, the barbs on its tongue can ingest a lot of hair. Over time, this builds up in the cat's body. If the cat can't expel the hairballs smoothly, it will vomit them up.



Owners can feed their cats hairball remedy and cat grass to help lubricate their intestines and expel hairballs. If a cat vomits a long, thin string of feces, it's likely a hairball. Cats have a habit of licking their fur to clean themselves, and the barbs on their tongues can introduce a lot of hairballs into their stomachs during this process.

Over time, hairballs will accumulate in the cat's body. If the cat cannot expel them smoothly, it will vomit the hairballs. Owners can feed their cats hairball remedy and cat grass to help lubricate their intestines and expel the hairballs.