How was buck different from the other southland dogs whom spitz had known?

Buck was different from the other Southland dogs known to Spitz because he possessed a unique blend of strength, resilience, and adaptability that set him apart. While many dogs were accustomed to a life of comfort and ease, Buck had a wild ancestry that made him instinctively attuned to the harsh realities of survival in the wilderness. His ability to harness these primal instincts allowed him to thrive in challenging conditions, unlike the more domesticated dogs around him. This innate strength and determination made Buck a formidable competitor and leader in the unforgiving environment of the Yukon.