If you are wondering what a bully stick is, it is the bull penis. It is one of the toughest and longest lasting natural treats. It is a great boneless treat for dogs of all sizes. As they are a tough treat, they are great for teeth cleaning. They are a great indoor treat as they do not make a mess – not too messy. They are a great replacement for raw hide - Click HERE for more information on the dangers of rawhide Please note: these are a seasonal product. As such, thickness variations are common. Thicknesses can vary from a pencil to the tickness of a thumb or slightly larger. Lengths range from about 10 - 20cm each. Toughness rating (1 – 3, with 3 being the toughest): 2 Please note that the toughness rating is a comparison of this treat against other treats.All our beef is grown in Australia.Typically there are 10 - 12 bully sticks in a 150g bag.As all our treats are 100% natural products, you can expect slight variations from the product pictured.