Because White Fang has killed Matt's dogs and has bitten Matt on the leg, Weedon Scott is going to shoot him. Who comes to the dog's aid? Why?

Matt came to White Fang's defense. He blamed himself and his dog.... himself because he kicked him, and Major because he tried to steal White Fang's meat.

“Now look here, Mr. Scott, give the poor devil a fightin’ chance. He ain’t had no chance yet. He’s just come through hell, an’ this is the first time he’s ben loose. Give ’m a fair chance, an’ if he don’t deliver the goods, I’ll kill ’m myself. There!”