That’s definitely a tough one. Just a heads up, if you feed exclusively dry food, it can lead to kidney failure. I only know from past experience. We feed a variety of things including cooking chicken for them, canned wet food and dry kibble. I would want some diversity in my diet. 
Not trying to make anyone feel bad, I just want people to know these things. 
I had to find this because, @MonasticDank , I don’t think it can be said any better, or more real. 