There is a recent report that 580 pet dogs and cats in the US have died after eating jerky-type treats. The FDA suspects that these treats have been imported from China, but they can't be sure. Why can't they be sure?
Manufacturers of pet foods are not required to state the country of origin for each ingredient in their products.
We see the big food conglomerates fighting labeling of GMOs for human consumption. We've seen them also fight having to list the country of origin for products used by humans. And why do they fight such initiatives tooth-and-nail? Because they don't want us to know the crap they put in the products we buy!!
Wholesome, healthy and safe ingredients can cut into a corporation's profit margin. Since profits are god, we certainly can't have that! So, in order to keep prices within reach of middle America, companies search for and utilize a variety of questionable ingredients and this "stuff" helps to maintain a company's market share and profits.
Now we know that it is not only we humans who ingest substandard food; our pets also are made sick or less healthy by the commercial crud we feed them.