At Optimeal, we know that each pet has their unique taste and food preferences—just like people. That is why each Optimeal product has different shapes and sizes of kibble. For example, we know that toy breeds need small kibble to enjoy their meals. Cats are picky eaters, and their food preferences may vary. For cats, not just the protein source is important—but also the size and shape of kibble. Kibble size, shape and color may differ a little between the different lot numbers (product manufacturing dates), because we use only natural ingredients, and we don’t use any colorants or stabilizers.