One of our best sellers, our beef liver is packed with flavor and guaranteed to please even the most finicky dog. These treats are perfect treat to use as a reward for potty training, teaching tricks, and good behavior at the dog park. Low temperature air-dried to retain nutrients and flavor. No fillers, additives, or preservatives. Just Beef Heart. Packaged in a 3.5 ounce resealable pouch for ultimate freshness. Refrigerate after opening.