Canine Courage.

This article discusses why rescue dogs fared better than human workers on rescue missions for the September 11 terrorist attacks. According to the author, nearly 70% of human rescuers involved with the recovery efforts have reported new or worsened respiratory symptoms between 2002 and 2004 while dogs remained fit and healthy. Veterinarian Cindy Otto explained that dogs are less susceptible to respiratory problems because their snouts can better filter air that goes to their lungs.