Having so much space at the top and then cutting off Riley's legs seems like an odd decision to me... but this is sharply focused and I like the colors and spots all working together. a 7 from me. I might have cropped a bit more... maybe at chest level... so it wouldn't seem like an accident that he has no legs.
He looks very noble here. I would suggest a much closer crop on top and a little more on the right as I think there is a bit too much branch for the amount of dog.