All Natural The Original Freeze Dried Training Treat Up to 100 Pieces Per Tub! Guaranteed Delicious Only 1 Ingredient 100% Pure Pork Liver Treats For Dogs Equals Up To 1 Pound of Real USDA Inspected Liver* Pro-Treat maintains the aroma, full-flavor and nutritional value of 100% raw Pork Liver. Fresh, conveniently freeze dried and diced into Reward Size Treats, Pro-Treat is an excellent obedience and training tool. Rich in protein and preservative free. Do not moisten treats. Small pieces may be sprinkled on food for extra flavor and nutrition.