"After i was thrown into the River and Before I Drowned

This story is one of a kind.It is very creative and appealing as Eggers tries to tell a story from the mind and eyes of a dog.It is also very captivating because, when i started reading the story,i asked myself what would the writer possibly be writing about a dog for over three pages. But when i was done reading, my questions were all answered.Its a great story about the life of a strong and mighty dog;a dog who takes pride in himself. A dog who thinks he can do anything,eat anything and almost thinks of himself as human and invincible.He doesn't think he can ever fail or fall.He is a survivor.When the writer says he eats pizza,chicken,yoghurt.....,He compares him to humans.He says he loves to run which is the most glaring example of his physical strength. Also,the fact that he survived after he was thrown into the river at the age of six months is another reason why he thinks of himself as a survivor.He is strong and he knows it;and the strongest amongst the other dogs. These, to me, are great qualities to give the protagonist; in this case,Steven.
It is even more interestimg to see at the end that, this strong,vibrant and machine-like dog finally dies.Its sad that he died but it goes to show that life is a rise and fall process.There is a beginning,a peak and then a fall.So like everything else, Steven met his downfall which resulted in his death.What i consider most intriguing is how he makes the dog die and then move on to the next like from where he sees and lives again,this time out of his body.This signifies the writer's belief in life after death.
The only question i have for everybody is why he says God is the sun.Could this just be for writing purposes or is there some element of truth embedded in this statement?