Single photograph, remove subject from background

Hi, I need expert in photography editing to remove the background from this photo so the subject can be placed in front of multiple backgrounds. Also, the freelancer will touch up the photograph (remove dust, optimize contrast, color, etc.,). The removal of the background will need to be very clean so the remaining subject (a dog) can be placed on multiple different backgrounds of different colors. Freelancer needs to: Clear all background, leaving the dog with transparent background. Touch-up subject (remove dust,optimize colors, contrast, etc.) at the discretion of the expert. You'll get a 2304 x 3072 2.67MB .jpg file. I'll need a .psd file in return with the subject as a layer. Should be very easy, quick work for a skilled photo editor. Thanks for the help! Brian