You mentioned the dog. Well I dropped a needle with a very short thread one time & my dog swallowed it. I took him to the vet & they did xrays. They could see the needle floating around in there. They said they would have to operate, cuz if they made her vomit , it could do a lot of damage. Well when they put her under , it made her vomit anyway & there it was. She still had to recouperate from the anesthetic . So you might have to check the dog.