This should help you:
http://www.dogfoodanalysis.com/dog_f...iews/index.php
Also, you can go to the following link and select a dog food and scroll down to the bottom of the page and read the ingredients:
http://www.petfooddirect.com
Also, most food suppliers will send samples if you request them. Good luck!
I've always fed mine three small meals a day and one small snack at night.