Bully sticks are a type of dog chew that is made from high-protein beef muscle, specifically, the pizzle (or penis) of a bull. They are a single-ingredient treat that is high in protein and amino acids, which are the building blocks of a dogs cells and play a vital role in transporting nutrients throughout a dogs body, in addition to being necessary for hormone production and immune system function. Bully sticks are highly digestible and safe to chew, compared to rawhide bones, which can become lodged in a dogs intestines when attempting to digest it. They are also durable and hygienic, unlike chemically treated rawhides that promote bacteria growth and can present a choking hazard. Bully sticks are available in different lengths, widths, shapes, and smells, and are sourced from high-quality, mature cattle.