12 inch Bully Sticks are perfect for large and small dogs. They provide plenty of chew time for larger dogs and last extra long when used with small dogs. They are made from free-ranging Brazilian Beef cattle and are a great choice for an all-natural chew. Any bully stick will promote healthy teeth and gums because of the chewing action required to eat the stick. We use exclusively FREE-RANGE grass fed cattle in our Best Bully Sticks natural beef dog treats and dog chews. We believe that cattle should be free range and graze on grass rather than be cooped up in feedlots. In our opinion, this makes for a higher quality product the way that nature intended.