Direwolves have made themselves friends to Goliaths for centuries in Oldavor, for those that remained and did not migrate south from the endless white had little option but to ally with Goliaths. Wajoski himself is a loner, much of a social outcast who finds better company in direwolves than his own pack. He has earnt a trust and respect with them that most Goliaths would need to see to believe.