6 - Difficult, but even sharper on the eyes and more even lighting, perhaps a little more space above the head too, may have made this even better in my opinion.
Love the reddish brown hues on this dog. Beautiful coloring and nice expression on the dog's face, but it needs more lighting for it to really leap off the page. The right half of the dog falls into some shadow such that we don't get the same level of detail & hue as that of the left side. Even lighting across the dog's face will increase visual appeal and impact. That is the only weakness to the image that keeps it at an 8 where it could be in the 9-10's category.
I like this pose a lot. Good catchlights in the eyes, and the overall focus is great. I think the black background works well and the lighting really brings out the subject.
Okay, I haven't finished scoring yet, but unless something utterly, incredibly spectacular comes along, this is my pick for the Blue. Totally gorgeous and perfect Pet Portrait.