I would suggest you look for the basics of dog nutrition. A good starting point is http://orijen.ca/downloads/ORIJEN_White_Paper.pdf

Then look at the ingredients of the following:
The Wet Dog Food Index
The Dry Dog Food Index
You should be able to see some common patterns in the good food.

If you want to know about raw feeding you could look at:
Raw Feeding: everything you need to know!

Rather than take anyone's word for what is best it is better to educate yourself so you can make an informed choice.

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