I came home for lunch yesterday to find that my cats had taken one of my bookmarks hostage and given it the torture treatment. I have no idea which one (or both!) did it, and I don't know if they actually ingested any of the tassle. I found the little tassle strings in a pile on the floor. What are the symptoms that I should be watching for? Last night, they both were eating and drinking, playing, using the litterbox. Nothing out of the ordinary so far.