The Icelandic+ Plus Small Lamb Horn with Marrow Dog Chew is a healthy and tasty treat for your pet. Made of keratin, not a bone, this horn provides hours of chewing enjoyment. The small fibers in the horn brush dog’s teeth reduce tartar and plaque build-up, making it a great addition to your pet’s diet. The large horns are a single ingredient and come in a variety of natural colors for small dogs 1-29 lbs.