Since I don't know the exact 'a boy and his dog' novel, I can only speculate. It could be that the story focuses on how the boy and his dog rely on each other. The dog might be the boy's best friend, always by his side, protecting him and giving him unconditional love. And the boy, in turn, takes care of the dog. It could also explore themes like growing up, as the boy might learn important lessons through his experiences with his furry friend.
Well, without more context, it's hard to say for certain. However, it could potentially revolve around the boy and his dog's journey through different places, facing challenges together and learning about life and loyalty along the way. Maybe they go on a quest or just have a lot of heart - warming experiences in their daily lives.
I'm not sure specifically which 'a boy and his dog' novel you mean as there could be many. But generally, it might be about the adventures and relationship between a boy and his dog.