Cats love playing with long, thin materials like string, tinsel, and sewing thread. This is likely because it excites and mimics their natural predatory instincts. And who doesn’t love the image of a cat or kitten bounding around the house, pouncing and swiping at a harmless ball of colored fabric?

Unfortunately, items like sewing thread pose a significant risk to cats if they are swallowed. They can become lodged in the mouth or stomach, causing bunching and perforation of the bowels as the body tries (but fails) to pass the lodged thread. Worse still, cats can swallow the sewing needle attached to the thread, causing serious injury to the mouth or digestive tract. This article will explain what you can do, and what your vet can do, to fix the problem of cats ingesting sewing thread.

My Cat Ate Sewing Thread, What Do I Do?

If you’ve seen your cat eat some sewing thread, it’s important to stay calm. While it’s best to act fairly quickly, ingested sewing thread is not immediately life-threatening. Follow the below three-step “do” and “don’t” guides to ensure the best outcome for your feline friend.

What to Do:

What Not to Do:

Why Are Sewing Threads Dangerous?

There are two main reasons that sewing threads are dangerous to cats:

1. Linear Foreign Body

A piece of sewing thread can become wrapped around the base of the tongue or lodged at the pylorus (the narrow outflow region of the stomach). This often leaves a length of thread dangling further down in the digestive tract. In veterinary circles, this situation is referred to as a linear foreign body. As the bowels naturally contract and relax in an effort to pass food and the sewing thread, they end up being pulled together by the anchored thread. This causes bunching and, further down the road, perforation of the bowels. Vomiting, lethargy, drooling, reduced appetite, and abdominal pain are the most common signs of a linear foreign body.

2. Sewing Needle Trauma

Cats will often eat the sewing thread right up to, and including, the needle attached at the end. This needle is sharp and metallic. It can cause lacerations of the tongue and oral cavity. It can also perforate right through the esophagus in the neck or lower down the digestive tract in the stomach or bowels. The latter can lead to life-threatening infections of the abdomen called peritonitis.

What Can Vets Do to Help?

Vets will start by conducting a full physical examination. They will inspect the mouth and under the tongue and palpate (feel) your cat’s abdomen. They will check for any neck pain or signs of malaise.

If you are unsure if the sewing needle was ingested, vets may recommend taking an X-ray. Needles, being metallic, will usually show up quite clearly as an opaque object compared to the other soft tissue structures of the chest and abdomen.

Once it is determined that sewing thread was ingested, there are three main options. If the thread is small and there is no evidence of it being stuck, it may be reasonable to wait and watch carefully. The thread should pass in 2–5 days, and if your cat becomes unwell before then, an urgent re-check is warranted. If vets are concerned about the length of the thread, or if the thread is known to be lodged somewhere, they may be able to use an endoscope to remove the thread, guided by a camera. This requires a general anesthetic. If endoscopy is not available, either surgical retrieval by entering the abdomen and cutting into the stomach or intestines may be the best option.

How Long Does It Take for Cats to Show Signs?

Most cats will not develop signs of a linear foreign body for 24–48 hours from the time of ingestion. This does not mean that you should wait for signs to develop before seeking veterinary attention. If the sewing needle was ingested, damage can occur much faster, either directly following ingestion or after a few hours.

You might not always notice right away if your cat has consumed something they shouldn’t have. It is important to watch your cat’s behavior afterward to see if they are showing any symptoms of irritability or poisoning.

Can Cats Pass Sewing Thread?

If the ingested piece of thread is very small and has not become lodged in the mouth or stomach, it may pass in 2–5 days. However, it can be very hard to know exactly how long the ingested thread is, and almost impossible to know if the thread will become stuck somewhere in the digestive tract.

Conclusion

When it comes down to it, the most important thing you can do if you notice that your cat has consumed a sewing thread is to get them to the vet as soon as possible. The vet will be able to determine the following steps and ensure your kitty stays safe until the thread passes or can be removed.

• See also: My Cat Swallowed a Needle: What Should I Do? (Vet Answer)

Featured Image Credit: Ermolaev Alexander, Shutterstock