At around age 4, we noticed Shamus, now fully grown at about 90lbs and tall enough to stand with his paws on my shoulders and look me in the eye, was having a love affair with Wysong. we also noticed he had been struck consistently with diarrhea. We also noticed he was finished with his food minutes before the other dogs. Shamus was eating too fast to chew, and unfortunately the size of the Wysong pellets were small enough to be eaten without swallowing.
With no change in behavior, no weight loss, no sign of discomfort, we began reading up on possible causes. This was in fact a sign of dogs eating too fast - an issue that could lead to Bloat, or Torsion, a horrible gastric affliction where the dogs stomach twists, and is often fatal - best case is that its treated by surgery.
We had this same "fast eating" issue with our cat Buster years ago, and couldnt feed him the nugget shaped Wysong cat food, and instead had to stick only to clover shapes that forced him to chew. So we immediately changed Shamus' diet to the Eukanuba large breed adult food (http://www.eukanuba.com/EukGlobal/US/en/jsp/product/productDetail/Large%20Breed%20Adult.jsp?id=1013). These pellets are significantly larger and helped slightly with the chewing, but Shamus was still eating too fast.
As we read more, there were a number of way people had to deal with this.... Feed your dog with his/her food distributed across a cupcake pan, a bunt pan, or buy a special bow to help slow dogs down. (http://www.gizmag.com/go/5717/)
I was not a fan of feeding my dog in a teflon coated pan, and the special bowls were not only expensive, but they were plastic - the cause of our cat Busters months long bout of cat acne.
Shamus' normal feeding bowl looked like this. So we decided to just turn it upside down and feed him in the "moat" that formed on the bottom. Problem solved, no extra expense. It slowed him down enough to finish his dinner in line with the other dogs, and he has had no more gastric problems since!


