I'm pretty sure you'll find this is just a natural behavior in bigger dogs. They just like to take their food where they want to eat it rather than eat it where you put it. It's nothing to be alarmed about.
I sometimes think you could post here that your dog wagged it's tail at you this morning and posters would pop up warning you to take it to the vet to get it checked out. I don't know if we have a lot of vets, vet techs, or what on the forums, but a whole lot of posters are either trying to drive business to vets, or are very, very frequent customers of their vets.
In this case, it's a pretty typical behavior in bigger dogs and is in no way a medical issue. If you ever watch nature documentaries you'll see wolves, coyotes, hyenas, etc. tear off a piece of the food and then run a ways away before eating it. That's essentially what your dog is doing. If you're lucky he'll be very good at cleaning it up, but in our case lots of little pieces would be left behind that made for noisy vacuuming but caused little trouble other than that.
Fly!!! Eagles!!! Fly!!!