I think that the structure slider of NIK Viveza can be used on an image like this to add definition without artifacts. This is with the NIK Viveza Structure Slider at 40%
In using the Viveza Structure Slider, I placed control points on different areas of the dog to pick up the different colors in the coat.
In this version I also added a 10% contrast increase in Photoshop CS6.
I think that this version has the gorgeous dog standing out from the background.
I have found that the structure slider works quite well on dog's coats.
What do you think?