A courageous sled dog named Balto led a team of huskies on the final leg of a 670-mile mercy mission across brutal Alaskan terrain in 1925 to deliver life-saving medicine to the stricken residents of Nome.

A courageous sled dog named Balto led a team of huskies on the final leg of a 670-mile mercy mission across brutal Alaskan terrain in 1925 to deliver life-saving medicine to the stricken residents of Nome.