Coyote, not fox. There is a chance for improving this image digitally, if the detail is there. It is a little over-exposed and needs cropping. Maybe also some unsharp-mask and contrast enhancement in photoshop. I like the calm demeanor, he doesn't look very stressed.
nice capture of the fox, although i think i wouldve liked it more if it had been looking at me and a bit closer...well close enough to get that rock out of teh way. it looks a little over-exposed also.