Why string causes blockage
String forms a tight knot that can snag the intestinal walls and stop passage of digesta.
Pets often swallow it unnoticed because it looks like a harmless toy and may cling to wet paws after playing with yarn balls.
The blockage can lead to swelling, pain and eventually tissue death if not treated quickly.
Why speed matters
Delaying care significantly worsens outcomes. Some signs appear hours or days later, so "looks fine right now" is not a reason to wait.
Symptoms of string-yarn-ingestion poisoning
- Repeated retching or attempts to vomit within 1-3 hours after swallowing
- Swollen abdomen that feels hard to the touch by the evening
- Restlessness and pacing, then sudden lethargy after a few hours
- Constipation or no stool for more than 12-24 hours
- Weakness and pale gums as the blockage worsens
What to do right now
- Call your vet or the Pet Poison Helpline immediately
- Keep the pet calm and prevent any more string from being eaten
- Bring the piece of string or a photo of it to the vet for identification
- Watch for worsening pain, vomiting or inability to pass stool and report any changes
- Do not induce vomiting; pulling on the string could cause it to snag the throat
Sources & further reading
- ASPCA Animal Poison Control — pet poison database & dosage references
- Pet Poison Helpline — toxicology triage guidelines
- Merck Veterinary Manual — toxicology monographs
- Vets Now (UK) — emergency toxicosis guidance
Other poisonings with overlapping signs
- Isopropyl Alcohol Poisoning: Emergency Guide — another common emergency
- Peace Lily Plant Poisoning in Dogs and Cats — another common emergency
- Onion & Garlic Toxicity Calculator — another common emergency
Owners also ask
- My 10 kg cocker spaniel chewed three isopropyl alcohol wipes during a birthday party — could guests have accidentally left them within reach?
- My cat has been nibbling the leaves of my peace lily every day for two weeks — will it get sick?
Frequently asked questions
Is String and Yarn Ingestion in Dogs and Cats poisonous to a dog or cat?
String forms a tight knot that can snag the intestinal walls and stop passage of digesta.
What are the symptoms of string-yarn-ingestion poisoning?
Repeated retching or attempts to vomit within 1-3 hours after swallowing; Swollen abdomen that feels hard to the touch by the evening; Restlessness and pacing, then sudden lethargy after a few hours; Constipation or no stool for more than 12-24 hours
What should I do if my pet ate String and Yarn Ingestion in Dogs and Cats?
Call your vet or the Pet Poison Helpline immediately Keep the pet calm and prevent any more string from being eaten Bring the piece of string or a photo of it to the vet for identification
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