All natural from free range cattle from USA. No hormones or antibiotics . These are approved by USDA, FDA, CFIA. Super high quality. No Stink like other bully sticks. These have a natural beef odour. A great indoor chew that won’t smell up your home. These have a weight range of 40-55 grams. Naturally air dried to lock in all natural flavours dogs love. No additives or preservatives. Single ingredient.