Our dog eats only meals prepared for him by me.
There are lots of dog recipe books out there.
Best of luck to you and your wife, Paul. You already have one key element to family business success in the pocket---you named your wife first in the thread title. Smart man.
That is wonderful that you can dedicate yourself to feeding your dog this way.
My wife is the face of the business. She is the one in the store everyday dealing with customers, ordering, collecting money, etc. I am more the IT, marketing and finance manager.