Also Try our Liver Bits Treats for Dogs PureBites® are made with only 1 ingredient; 100% Pure USDA Inspected Duck Liver in the USA. Dogs love the taste of PureBites® because our treats are freeze dried RAW to lock in the aroma, texture and freshness they crave. Dog parents love PureBites® because our treats are 100% pure and rich in nutrients for a happy and healthy life. Made with only 1 ingredient; 100% Pure USDA Inspected Raw Duck Liver. Proudly Sourced and Made in the USA. 100% natural, pure and easy to digest without any added preservatives. On average 3 calories per treat and high in protein. Duck Liver is a hypo-allergenic protein and a great treating solution for dogs with allergies. Ideal for dogs with health issues or pets that are overweight, diabetic, gastrointestinal disorders, or are on a restricted diet. Made using a delicate freeze drying process that preserves the nutritional integrity of RAW fresh whole food. Only water is removed, preserving all the characteristics and natural nutrition of fresh Raw Duck Liver.