Many people choose our 4" odor free bully sticks for smaller breeds of dogs. Although large dogs like them too, many larger dogs can eat a 4" Bully Stick fairly quick. As such, they are great snacks for large pooches; but are the perfect size for a smaller dog. They are made from free-ranging Brazilian 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 and saliva generation 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. These sticks do range in thickness. They are Thin, Standard, Thick and also Jumbo. Each order will be selected at random. These are all natural odor free bully sticks.