Animal Heroes

Animals have a knack for saving other animals, but they've also been known to put themselves in the line of danger for humans -- and we're not just talking about pet dogs that protect their homes from burglars.From dolphins that rescued a surfer from sharks and a whale that helped a drowning athlete to an elephant that protected a young girl from a tsunami, these amazing, selfless animal heroes remind us once again of the unique species we co-habitat with that we need to protect.