The Icelandic Lamb Horn is made of keratin - not a bone! It's long-lasting, nutrient-rich and helps reduce tartar and plaque build-up for healthier gums and teeth. Icelandic Lamb Horns are 100% edible and provide hours of chewing enjoyment for your pet. Plus, you can have peace of mind knowing it's been cleaned, boiled, and baked within FDA, USDA, EU and MAST standards and regulations. This treat is 100% Viking and 100% natural with no additives, preservatives or supplements.