Real or Fake? What Breed?

This photo has made the viral-email rounds for the last couple of years. Subject lines accompanying the photo have included everything from "mutt on steroids" to "strongest dog in the world" to "Russian Special Forces."

So what do you think Gun Doggers? Is this a real photo of a real dog? If so, what breed is it and just how the heck did it become the Incredible Hulk of the canine world?

I don't want to give the answer away in the post, but if you want to definitively know if it's real or fake and what might just cause something like this, as well as the possible breed, click here.

Thoughts Gun Doggers???