For people who are vegetarians or muslims is this a nightmare...
http://www.christienmeindertsma.com/index.php?/books/pig-05049/
Christien Meindertsma has spent three years researching all the products made from a single pig. Amongst some of the more unexpected results were: Ammunition, medicine, photo paper, heart valves, brakes, chewing gum, porcelain, cosmetics, cigarettes, conditioner and even bio diesel.