I just started my dog on Orijen after researching online. She has previously eaten TOTW and Wellness Core. She seems to love it. My only concern is that I noticed zea mays listed on the ingredient list. Zea mays is just the scientific name for corn. Why would a grain free dog food contain corn (technically a grain) and why would it be listed under its scientific name? I emailed Orijen's customer service about this hoping for an explanation. Thoughts?