That's because dogs are what are known as opportunistic scavenger carnivores. What your dog needs isn't a diet that is low in fat and high in fiber, what she needs is a real carnivore diet.

Educational websites:
http://www.rawfed.com
http://www.rawlearning.com
http://www.rawmeatybones.com with our friend veterinarian Dr. Tom Lonsdale

Articles to read on Feeding:
http://aspenbloompetcare.com/2007/08/canine-cuisine.htm
http://aspenbloompetcare.com/2007/09/food-choices-for-our-dogs.htm
http://aspenbloompetcare.com/2006/01/what-are-we-really-feeding-our-pets.htm
http://aspenbloompetcare.com/2005/11/dispelling-the-myths-of-raw-feeding.htm
http://aspenbloompetcare.com/2008/06/the-raw-truth.htm
http://aspenbloompetcare.com/2008/06/parasites-obesity-and-paw-chewing.htm

Animal Talk Naturally shows to listen to on feeding- in order:
http://www.animaltalknaturally.com/2007/09/18/kibble-poop-show-1/
http://www.animaltalknaturally.com/2005/10/18/now-were-cookin-show-2/
http://www.animaltalknaturally.com/2005/10/25/the-totally-raw-truth-show-3/
http://www.animaltalknaturally.com/2006/11/14/no-grain-no-pain-show-62/
http://www.animaltalknaturally.com/2007/03/20/livin-large-show-85/
http://www.animaltalknaturally.com/2007/04/10/the-silent-spring-of-dog-cat-health-show-88/
http://www.animaltalknaturally.com/2007/04/24/the-raw-feeding-dilemma-show-90/
http://www.animaltalknaturally.com/2007/05/08/the-bone-afide-truth-gettin-meaty-with-it-show-92/
http://www.animaltalknaturally.com/2007/09/11/what-is-the-right-food-for-our-pets-debunking-the-bunk-show-111/
http://www.animaltalknaturally.com/2007/10/09/those-raw-meaty-pearly-whites-show-114/
http://www.animaltalknaturally.com/2008/07/11/dignity-for-animals-show-178/
http://www.animaltalknaturally.com/2008/08/15/the-truth-about-dogs-show-188/
http://www.animaltalknaturally.com/2008/08/26/economics-or-health-our-carnivore-pets-show-191/