Bull testicles are a great protein source for dogs that offer small amounts of iron, magnesium, and potassium that can be fed in moderation as a treat or topper and a great source of proteins and fats. Great sources of hormones: 1) Testosterone and 2) Inhibin. These hormones primarily relate to the development of male dogs which can provide hormonal support for neutered males. Ingredients 100% Natural Bull Testicles Feeding Guide This product is intended for intermittent or supplemental feeding only and should not be fed as a complete diet. Always supervise your dog or cat when feeding any treats or chews. Please ensure that your pet always has access to plenty of fresh water.