Dogswell Breathies For Dogs, Chicken Breast Minis, Mint & Parsley, 5-Ounce Pouches (Pack Of 6) Pack Of 6, 5-Ounce Pouches (30-Ounces Total) Due To The Lack Of Artificial Preservatives And Artificial Colors In This Product, Their Could Be Color Variations Which May Cause The Product To Become Darker Over Time