I alternate feeding my cats between raw and canned, as I know raw is the best for them. But I keep reading on this forum and others to avoid canned food that contain meat by products. I did contact two manufacturers of raw meat that I buy, and I was told that the whole carcass is processed. That will imply using meat by products. So if that is the way it is done in raw, ( at least with these two, don't know about everybody else) why should it be bad in canned food ?