Redbarn's Filled Bones are natural beef femur bones filled with a delectable peanut butter filling. It's the perfect pairing of taste and health, as chewing is a natural boredom buster, stress-reliever, and plaque-remover. Plus Redbarn's patented filling technique allows our filling to stay semi-moist and inside the bone, ensuring your dog works hard to get to the tasty inside while your floors stay clean. Peanut Butter Filled Bones, available in small or large, are the perfect bone for your peanut butter obsessed friend.