[alaskayorkie]

The article goes on to talk about what a hearty breed Yorkies are and has a number of cool anecdotes about their stamina and, yes, heroism:

Oliver, a hefty, 12-pound Yorkie pushed open a screen door and raced across the street to the aid of a 79-year-old woman being mauled by an 80-pound Akita. The Akita turned his attention on Oliver long enough for neighbors to whisk the woman to safety. The Akita was eventually taken into custody by animal control, while Oliver was taken to the vet's for nine stitches.