I went through the horrors of thread consumption with one a few years ago. Wilbur was in obvious distress, so I took him to an emergency weekend clinic.
They made a diagnosis, but they were wrong. They missed the thread wrapped around his tongue, which was found by his usual vet Monday morning.
Wilbur has now survived de-threading surgery AND de-plugging surgery, for many years. He is a dear, and drools messily when especially content. He likes to sleep draped across me, and enjoys beating up on his much larger brother Orville. He fetches furry faux mice.
Ah, one of the happy drooler brigade! The fellow I put to sleep a few years back would drool on me when I would either pet him or brush him. Messy but sweet. ;)
After we used the last of the brown vinegar stuff, she never ate another thread.
BA