Diarrhea in dogs can be caused by a number of viruses, colitis or by eating people food. Discover how abrupt food changes can give a dog diarrhea with help from a staff veterinarian in this free video on dog health and pet care. Expert: Dr. James Talbott Bio: Dr. James R. Talbott is a staff veterinarian at Belle Forest Animal Hospital and Kennel in Nashville, Tenn. Filmmaker: Dimitri LaBarge