I love the feeling of the image... A boy (or girl for that matter) and a dog have a special relationship. I still remember and feel love for a dog that I grew up with even though that was close to 65 years ago.
As far as the image... I remember that Photoshop Elements had a way to crop out the middle of an image like this and move the important elements of the image closer to each other using the Content Aware Move Tool.
http://tv.adobe.com/watch/learn-phot...nt-aware-move/
I have never done this but, it appears to be possible using Photoshop CS6...
https://www.youtube.com/watch?v=zgi74GhtJk4
I also do not know if this type of move is possible with a complicated background like in this image. However, if it could be done effectively, I think reducing the distance between boy and the dog would be good for this image. Both the boy and the dog could be bigger in the resulting image...
Perhaps someone who is familiar with Content Aware Move could enter this discussion and help me jog my memory...