Filled Bones are the perfect way to keep your dog occupied in a blissful state for hours on end. Each flavor packed bone is filled all the way through with a mixture that stays firm and will not make a mess on your dog or his surroundings. Filled bones come in six delicious flavors: Beefy, Chicken, Bacon, Lamb, Peanut Butter and Cheese & Bacon. These flavors are available in two sizes: Small (about 3 inches) and Large (about 6 inches).