peanut, my 4 year old neutered male, has been gnashing or grinding his teeth for over a year now. There is no bloody stools, and though our family all has went through a couple diarrhea episodes in the last year, his stool is presently( and has been for a few months) normal. At first i was worried that he may have an ulcer or blockage, and i monitored him closely - there were no other signs of anything. What's odd is that he only does the teeth gnashing on a certain type of cloth -- and that he just keeps on doing it! Has anyone experienced behavior like that? Thanks for your time, Ben Johnson Johnson Auto Salvage http://www.autosalvage.org [Posted in FML issue 2600]