Adopted just hours earlier by human companions Lee and Elizabeth Littler from a shelter in Ohio, USA, Saint Bernard dog Hercules keeps them safe as he nips at the heels of a would-be burglar and chases the intruder away from their home.

http://abcnews.go.com/US/wireStory/newly-adopted-dog-runs-off-burglar-ohio-home-14931798#.Tr-6jz1Cq0s
http://www.abc2news.com/dpp/news/national/hercules-the-dog-saves-his-new-family-