http://petplace.netscape.com/Articles/artShow.asp?artID=3501

http://www.marvistavet.com/html/body_how_to_read_a_pet_food_label.html

http://www.dgp.toronto.edu/people/TabathaHoltz/cats/nutrients.html

http://www.fda.gov/cvm/index/consumer/petlabel.htm

:D