what proof is there that the dog knows better than the man about the threats to the survival? Cani have the exact quote which the story says?

The man has a sense of cockiness to him. He thinks he knows better than his very apprehensive husky and the old timer's advice. The dog and the elements are in sync with nature’s rhythms; the man is not. The Husky lurks back knowing the foolhardiness of continuing in the frigid temperatures, he knows this through generations of instinct. The dog fears the whip of man and his loyalty is thin. The dog personifies London's philosophy of naturalism.The dog has no ego, only a respect and synchronicity with nature. London's familiar theme of respect for this setting and the animals that are in tune with it is hammered home when the man freezes to death alone in the snow,the dog will survive.