Center bones are popular with any size dog and are one of the top ten favorites. Most of our centers will have succulent marrow in the center of the bone along with tasty meaty pieces left on the bone. These all-natural USA bones with no artificial ingredients are dipped in natural liquid smoke and then slowly roasted. 1” centers are beef femur bones and are best for small to medium size dogs. All Jones products are 100% grown and made in the USA.