What was White Fangs strategies when it came to killing/ attacking other wolves.

White Fang was ruthless with other dogs. He violently imposed his will on them and broke any domesticity they might have had.

He declared a vendetta against all dogs. And so terribly did he live this vendetta that Grey Beaver, fierce savage himself, could not but marvel at White Fang’s ferocity. Never, he swore, had there been the like of this animal; and the Indians in strange villages swore likewise when they considered the tale of his killings amongst their dogs.