Nutro question

What is the difference between Nutro Max and Nutro Natural Choice dog food?

Here's a link to the nutro website. They have all the pet products listed with info. about each one.


http://www.mynutro.com/

www.nutroproducts.com

Is another one. I feed Sadie Nutro, and it's seemd to be working well for her!:) ;)