My dog only eats good stuff. Since you mention the article. Beef and chicken are still being fed the by products and leftover, including manure which is a number one case for e coli outbreaks.

Now the fact is that in late 80s and early 90s dog food manufacturers such as Pedigree realized that Mad Cow disease can transfer over different species. USDA didn't worry about it and study was buried for couple of years. While we were being fed meat that was dangerous and possibly infected, Pedigree was making food that was free of the by products that came from animals that were possibly unsanitary or fed with food made by the same breed. And its still like that until today. It's easier to sue and win when your pet dies than if you son or daughter died of food poisoning. My dog won't touch corn and ash food but he will eat premium dog food. As per my conversation with Pedigree they still until today refuse to use by products that came from animals that were fed by animal feed. As a matter of fact they make sure that any type of meat by products was not fed by feed that contained any type of meat. If you buy premium stuff I think you be alright. Now the question may be posed if the excessive use of dog food over the period of time would cause any health problems. Well I don’t know that but I know that I rather have PEDIGREE LITTLE CHAMPIONS® CHOICE CUTS® in Sauce With Lamb Canned Food than starve.