Overall Lesson of the Story: It is important to find a strong and reliable master.

The overall lesson of the story is that it is important to find a strong and reliable master. This lesson is conveyed through the various experiences and interactions of the animals in the story.

1. The Dog's Loyalty to the Man:
Throughout the story, the dog is shown to be incredibly loyal to the man. Despite facing hunger, cold, and danger, the dog remains by the man's side. This loyalty is a result of the dog's recognition of the man as a strong and reliable master. The dog understands that his survival and well-being are dependent on the man's ability to provide for him.

2. The Dog's Struggle for Survival:
As the dog journeys with the man through the harsh and unforgiving wilderness, he faces numerous challenges and obstacles. These challenges include freezing temperatures, lack of food, and dangerous encounters with other animals. The dog's survival instincts kick in, and he learns to adapt and navigate through these difficulties. However, at the core of his survival is the belief that the man will protect and provide for him.

3. The Man's Dependence on the Dog:
The man, on the other hand, also relies on the dog for survival. The dog's keen senses and instincts are crucial in detecting danger and navigating the treacherous landscape. The man understands the value of having a loyal and reliable companion in the dog, and he relies on the dog's instincts to guide them through their journey.

4. The Relationship between Humans and Animals:
The story raises the broader issue of the relationship between humans and animals. While the dog serves as a loyal companion to the man, it is important to note that this does not imply that animals should serve humans in a subservient manner. Rather, the lesson emphasizes the importance of mutual trust and reliance between humans and animals. Animals have their own instincts and abilities that can be beneficial to humans, and it is important for humans to recognize and respect these qualities.

In conclusion, the overall lesson of the story is that it is important to find a strong and reliable master. The dog's loyalty to the man, the struggles they face together, and the mutual dependence they have on each other highlight the significance of having a trustworthy and capable leader. This lesson extends to the broader relationship between humans and animals, emphasizing the importance of mutual trust and respect.