What yeehat Legend developed about Buck chapter 7

The Yeehats speak of a Ghost Dog that haunts the woods and slays the bravest hunter. One wolf returns to the valley each year. He sits and muses, remembering, howls once and then rejoins his pack.

The years were not many when the Yeehats noted a change in the breed of timber wolves; for some were seen with splashes of brown on head and muzzle, and with a rift of white centring down the chest. But more remarkable than this, the Yeehats tell of a Ghost Dog that runs at the head of the pack. They are afraid of this Ghost Dog, for it has cunning greater than they, stealing from their camps in fierce winters, robbing their traps, slaying their dogs, and defying their bravest hunters.