From the August 31, 2009 Seattle Times:
Police say a man who shot and killed a pit bull in Vancouver had a permit to carry a gun and acted in self defense.
The 73-year-old man was threatened Saturday by two vicious dogs as he was walking near his home. Before he could get to safety, the man determined he had to shoot one of the dogs to keep from being injured.
The Vancouver Columbian reports the second dog was captured by the Clark County Animal Control. It's conducting an investigation to identify the owner and determine how the dogs got loose.