Dogs are canines.
Canines are carnivorous.
If you think about what a wolf eats, you have a good idea of what your dog needs to eat.

Dogs eat raw meat (best while still on the bone), the bloodier the better. Organ foods like liver and heart.
They also need bones, not those rawhide chews, real bone.
Raw eggs, slightly cooked veggies with meat juices or blood dripped on them.
Believe it or not, fruits too.

There's a podcast where you can get diet tips for your dog.
http://www.stitcher.com/podcast/animal-talk-naturally

I had two full size yellow labs and two mid-size American Eskimos.
We fed them Purina Chow but supplemented with raw meat diet.

Wolf Tucker http://www.wolftucker.co.uk/wolftucker-raw-feeding-guide/ Lists the benefits of a raw diet and talks about the myths and concerns

Just some of the physical benefits of a raw dog food diet can be as follows:

Cleaner teeth and fresh breath
Better weight control
Improved digestion
Shinier, healthier skin and coat
Reduction of allergy symptoms
Harder, smaller, less smelly stools
Increased mobility in older animals
More energy and stamina
Strengthened immune system
Improved liver, pancreatic and bowel health
Savings due to less trips to the vet

Try to remember its a dog, not a person.