Absolutely! The food you feed your dog matters greatly!
Just like it matters what you put into your body it matters what you put into your pets body. Unlike ourselves, dogs tend to not get a choice in the food they get in their bowl. It is up to you to make sure you are feeding your dog food that will help them be healthy and happy.
Ingredients like Corn Meal get make the food quality lower and more comparable to human fast food. In addition, coloring agents that are added can harm your pets.
There are many ways to research which ingredient you should be on the look out for if you search "Dog Food Ingredients."