These treats are processed without additives or preservatives in a USDA inspection facility. The Liver Training Treats maintain the aroma, full-flavor and nutritional value of 100% raw liver. Fresh, conveniently freeze dried and diced in reward sized yummies, this is an excellent reward and training tool. These all natural treats have been the preferred choice of trainers for over 40 years due to it's convenience and palatability. Our treats contain only one ingredient and are perfect for dogs with allergies. Your dog will absolutely love our treats! Made in the USA. Available in Beef or Chicken flavors and 4 ounce or 14 ounce tub.