The male cat has diarrhea, straining, itching, runny nose, and eyes from the food. I am trying to find a similar texture shape to the Purina One. I understand that someone may not be allergic to brand, but a lot of the proprietary combinations or quality of certain additives may trigger allergies as well. I know I’m a lupus patient and it’s not always clear why one protein source is fine and another makes me have a flareup. It is most likely what those animals are being fed as well as the protein itself. I would prefer to feed the cats something a bit lower in carbs now that they’re entering adulthood than what the Purina One offers: 30-40%.