Why is a cat that swallowed thread or string treated as an emergency?
A swallowed string can anchor under the tongue or in the stomach while the intestine keeps pulling on the rest — a sawing motion that cuts through the gut wall within days.
Veterinarians call it a linear foreign body, and it is more dangerous than a compact object of the same size. Sewing thread with a needle, ribbon, tinsel, hair ties chewed into strips, and toy strings are the usual culprits in cats.
The one rule: never pull
If you see thread trailing from the mouth or the anus, do not pull it — the far end may already be fixed deeper in, and traction concentrates the cutting force on one loop of intestine. Cut off any long dangling portion so the cat cannot swallow more, and leave the rest exactly where it is. Vomiting, refusing food, drooling, a hunched painful posture, or hiding after a suspected string swallow all mean the process may have started.
How long a cat tolerates a linear foreign body differs by individual, and by the time fever or a rigid belly appears the intestine may already be leaking. Whether you saw the swallow or only found a chewed-up hair tie and a missing length of string, have a veterinarian examine the cat the same day — and immediately if any of the signs above are present.
MediIndex articles are for general information only and are not medical advice, diagnosis, or advertising. Outcomes vary by individual — consult a board-certified specialist for personal decisions.