Tucker's Boost Cubes Pureed Lamb Heart and Liver Blend Supplemental Feeding for Dogs & CatsIngredients: Lamb Heart, Lamb Liver Mix it, Top it, Treat it! Organ Blends are 60% heart and 40% liver. Have fun with serious nutrition, creating the ultimate bowl with Tuckers Boost Cubes, adding key nutrients to your pets favorite meal or snack! Guaranteed Analysis Crude Protein (Min): 12% Crude Fat (Min): 4% Crude Fiber (Max): 1% Moisture (Max): 73% Calorie Content (ME, Calculated): 1400 kcal kg, 32 kcal cube Supplemental Feeding for Dogs & Cats