This has been a great discussion, I’m considering cooking for my dog and give a variety of foods based on my research. There is a strong and growing case for vegan diets for a variety of reasons as discussed in this forum.
There is so much controversy regarding food for humans and animals, Gary Taubes book Good Calories, Bad Calories is an important book for humans to read, regarding the madness of the meat, dairy, butter are bad, as the real culprits sugar and simple carbs were put front and center. For my family controlled carbs, heavy veg, select fruits and light meat consumption is the answer with high quality supplements to fill in some of the blanks.
I will feed my Propsa Shih Tzu the same basic template. mostly poultry, occasional beef. There are some solid sources of veg protein as well as other beneficial foods. That being said, I found this study to be interesting on the omnivore dilemma with canines:
http://www.sciencemag.org/news/2013/01/diet-shaped-dog-domestication
