Everyone knows that dogs eat things they are not supposed to like toys, clothing and the stuffings of comforters, but cats also can get into trouble when left alone with the wrong objects.
Swallowed string, yarn, and elastic can become linear foreign bodies that are life-threatening and require surgery to remove. This type of foreign body happens when one end of the object is anchored in the upper GI while the other end travels down the lower GI along with food and feces.
Sometimes the offending string or yarn gets tied around the tongue or frenulum, which is under the tongue, while the rest of the object is swallowed. The force of the digestive process pulls the string or yarn further down the tract creating an “accordion effect,” bunching up the small intestines. This can be seen on x-rays as a gas pattern, but the foreign object will not be seen by this method.
Surgery for a linear foreign body is complicated and delicate, requiring advanced supportive care. If you notice your cat has string or yarn sticking out of its mouth or rectum, or has some tied under the tongue DO NOT cut or pull on the object. This will only tighten the foreign body and increase the risk of intestinal perforation. Seek immediate emergency help from your veterinarian or an emergency veterinary practice.
Signs that a cat has swallowed a linear foreign body and needs help include vomiting, loss of appetite, lethargy, abdominal pain or unwillingness to lay down, hiding, straining to defecate, and other changes in behavior. Any of these paired with a history of playing with string or yarn is a medical emergency.
Prevention is the best medicine when it comes to any foreign body. If you have cats, keep all string, yarn and elastic locked away in a drawer or locking box. Even the elastic on face masks can cause a problem. Check all toys for any such components before allowing cats to play with them, even supervised.
For more reading on foreign bodies in cats go to https://imaging.vetmed.ufl.edu/2015/11/30/10-month-old-fs-domestic-medium-haired-cat/