Training treats. Roasted protein tips. 100% beef lung treats. 100% USA born, raised & harvested. Our treats are unique in the fact that they are one type of ingredient: the beef products themselves. They're slow roasted with no additives and no preservatives - 100% natural. Calorie Content (Calculated): Metabolized Energy (ME). 3840 kcal/kg; 38 kcal/10 grams. butchersblockpettreats.com. Proudly produced in Omaha, Nebraska USA.