Here is something quoted from a friend of mine that I always trust when it comes to dog nutrition. :0

I came across this when I was researching Garth Merrick and his businesses, and the whole thing is one of the reasons why I recommend that people stay far, far away from not only Merrick and "Beef n More" pet foods, but also all their various chew items such as cow hooves, pig ears and so on.

Having lived in Europe during the whole BSE ("mad cow") disaster, I can't believe how dismissive those people with a vested interest in this sick industry can be about the risks. Every single item that was/is even the least bit suspicious is incinerated in Europe. Here it's good enough to be produced into animal feed.