Petcurean Missing Link Ult Skin Dog 5# Formulated With Highest Quality, All-Natural Whole Foods Ingredients Chosen For Their Nutrient Profile And Synergistic Effects Formula Is Rich In Flaxseed, The Richest Vegetable Source Of Omega-3 Contains Lignans, Protein, And Fiber Delivers "Living Molecules" Such As Enzymes, Friendly Bacteria, And Phytonutrients