Calorie Content (Calculated) (ME): 3198 kcal/kg, 336 kcal/piece. Meaty middle made with real pork. Long lasting chew. No artificial FD&C colors. No rawhide. Easily digestible. Good to the Bone: easily digestible; meaty middle made with real pork; long-lasting chew helps clean teeth. Purina.com. PurinaTreats.com. Shop the entire lineup of busy chew treats at PurinaTreats.com. Produced in USA facilities.