Lamb horns are a fun healthy chew; they naturally contain calcium and phosphorus, the outer shell is made of keratin -not bone- which can support skin and coat health in dogs. Lamb horns also help clean teeth since they're made of thousands of small fibers that act like a natural toothbrush. Lamb Horn Marrow is rich in vitamins, calcium and protein. It helps improve brain function, supports the immune system, and maintains heathy bones. Cleaned, prepared and safe, lasts for hours. Please note that this is a natural product so color and shape may vary. Always supervise dogs with a chew and remove when it's small enough to swallow. Because of the high calcium content your dog's poop might have a lighter color than usual after consuming this chew.