Another site I belong has a member who did extensive research on dog food. She's the one that got me thinking about what exactly is in dog food. Her site is amazing and it really gives a good insight on how to read pet food labels. Here is the direct link.
http://www.mordanna.com/dogfood/index.php?page=li101
Her entire site is pretty informational.
http://www.mordanna.com/dogfood/index.php?page=li101
Her entire site is pretty informational.