Can Hair Cause Intestinal Obstruction In Dogs?

Can Hair Cause Intestinal Obstruction In Dogs? The word “trich” means hair, while a bezoar is any foreign material that obstructs the stomach or intestines. Therefore, a trichobezoar is a gastrointestinal obstruction caused by hair. While hairballs are typically attributed to cats, they can also cause problems in dogs. Is dog hair harmful if swallowed?