Please take note that usually feeding a pet an item permanently changes that pet (increases its ability level). We can recover your fed item if you send in a ticket, but it will be a one-time thing. Make sure that you're careful when you're selecting what you want to feed.
Additionally, attempts to abuse this system by feeding your pet and getting items back from our support team may result in a suspension of your account. We are aware and take note of these things, so if you've tried doing this multiple times in the past, we will deny your request.