What's the Name of this dog Book?

Okay, so Its about a boy who gets this dog; I don't know where he gets it from, and its a hunting dog. He lives on a farm, and his Grandpa owns a store. The boy uses it to hunt racoons, etc. in the forest, and enters into a hunting contest and wins, or close to it. I think in the end the dog dies, its a kind of sad ending. I think at the end its revealed that its narrated by the boy now an Old man, but Im not sure about that part. I think the most similar book I can think of is Shiloh.