Go ahead, turn the bag around and look at our ingredients. Mini-PureBites RAW Freeze Dried Beef Liver Trainers are made with only 1 ingredient; 100% Pure USA Sourced & Made Human Grade Beef Liver. Mini-PureBites Trainers offer pet parents the chance to train their dogs or treat their small dogs with specially cut pieces of RAW Beef Liver. 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.