Redbarn's Bully sticks are sourced from free-range, grass-fed cattle from South America. These dog treats are a long lasting, all natural, highly-digestible dog chew made from only one ingredient- beef pizzle, a muscle sourced from cattle that is then slow roasted and simmered in it's natural juices for an irresistible flavor and smell. These chews not only are great tasting, but they help support muscle development and dental health as well by gently scraping away plaque and tartar and massaging your dog's gums at the same time! This product is grain free and contains no rawhide, preservatives, artificial flavors, or chemicals.