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What dry foods have you tried with Lily? Have you checked out
Dog Food Analysis - Reviews of kibble? Its a great site for reviews on kibbles; I think most YT members feed kibbles that are rated at 5 stars.
Personally, I do not feed kibble. Sasha and Xavier are both on Nature's Variety Raw Medallions and they gobble it up! Xavier has been a pretty picky eater and didn't care for Wellness, Chicken Soup, Canidae, or Merrick's too much. Hope that helps some!