'Denatured' meat. This post is in no way advocating 'don't feed kibble' but 'know what's in your dog's food' warning. I had no idea that the meat being transferred to meat rendering plants/ pet food manufacturers were drenched in chemicals. Try to avoid pet foods that contain 'meat by-products', 'poultry by-products, 'animal fats', 'bone meal', etc., basically things that do not list the named animal.
I saw this article on Dog's Naturally Magazine (from a pet store where I get their food, for free), & it lists the chemicals used in denaturing meat.
Couldn't find an electronic copy online, so scanned it.
Meat in Pet Foods.jpg Meat in Pet Foods 2.jpg This article is written by Amy Budd, BS in Animal Science.
So I googled 'carbolic acid'
carbolic acid.jpg:
http://www.wisegeek.com/what-is-carbolic-acid.htm Although many compounds that are essential or beneficial to life are based on phenol groups, carbolic acid itself is toxic and corrosive. It is volatile and is easily absorbed through the skin, so inhalation and skin contact as well as ingestion are possible routes of exposure. The vapor irritates the respiratory tract and high concentrations can cause lung damage. http://healthypetsnw.com/articles/commercial_foods.php According to federal meat inspection regulations fuel oil, kerosene, carbolic acid and citronella are the approved denaturing materials used.