100% natural, dehydrated and government inspected.These bully sticks are an excellent long lasting chew treat, a great source of protein, and suitable for all dog sizes. HeroBullySticks™are free of chemicals and preservatives. They are low in fat, and easily digestible. HeroBullySticks™ are a product of Columbia from free-range beef, and are USDA, CFIA, FDA approved. As with all treats, pet supervision is recommended.