If you're asking my personal opinion, I give my dog 2 cups of dry dog food in lunch and dinner and in breakfast I give her 1 cup of oats in milk. (lovelybordercollie.com)
I always replace half cup of oats with coconut flour and its really nice! (makingthymeforhealth.com)
*** You can use 1/2 cup of oats for more hearty balls. (ifoodreal.com)