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Why did my 6-month-old cat vomit a worm and breathe loud while sleeping?

Updated On September 23rd, 2025

Hello I have a cat that is roughly 6 months old. Mostly 100% healthy,he eats goes to the bathroom no prpblem, has energy, lovable does not seem in pain.. however maybe 3 weeks ago he threw up once and there was one single worm in his vomit. It was long white spaghetti looking and definitely alive.. the current symptom that worries me is when he sleeps he breaths loud but besides that seems fine. no worms in his feces and only one vomit. Looking online I can't find an answer.

1 Answer

Most Helpful Answer

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Answered By Dr. Paula Simons

Veterinarian

Published on January 13th, 2017

From your description it sounds like your cat may have roundworms. These are typically present in vomit with high parasite loads. The good thing is that they are easy to treat. Your veterinarian may have a preferred deworming medication that they can prescribe for your cat. You may also wish to submit a stool sample from your cat for analysis. It is not likely that these parasites would cause loud breathing. That is something you may want to mention to your vet when you call. It could be a sign of upper respiratory inflammation.

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