A friend got my cat a toy with a string attached so you could tie it to a door knob for cat entertainment. Murphy chewed the string off and got it tangled around the back of his tongue. I couldn't figure out why he wasn't eating and was just laying around took him to the vet and was very fortunate he had not swallowed it and the vet was able to clip it and remove it. None of my cats are allowed toys with strings now.