While growing up we had a dog named Tinker who lived to be somewhere near 20. We always fed him "Special Cuts" from the grocery store, all sugar. It's basically like the bits in Kibbles & Bits & made by the same company. He did fine on that, and he also got a LOT of people food. All dogs, like people are different. My Dad ate more fat than some third world countries every day for his whole life, but still lived to be 81.

Now, I'm not going to feed my dogs that, just because I want to feed them something that *I* consider better. I wouldn't let my skinkids (if I had any) eat sugar all day, and neither will my dogs. I think there are 4 basic categories of food:

*Utter junk (all fillers, sugar, virtually no decent protein source etc.) A waste of $ IMO, cause it ALL gets pooped out since there are no nutrients to absorb.

*So-so food (some fillers, not as much sugar, some have good protein sources, some don't)

*Premuim (still some have fillers, most don't have sugar, some really good, moderately priced nutrition)

*Human grade (usually the "health" food of dog food)

Having said all that, like Clara said, I don't care as long as they're not being starved. No good protein source and ify nutrition is always better than starving to death.