LuckyPet Antler Dog Chews - A Long Lasting, Safe and Healthy Favorite of Dogs Odor-free and stain-free, high in calcium and phosphorous. Helps to clean your dog's teeth. Be sure to choose the appropriate size antler chew according to your dog's weight. Small for 10-20lbs, Medium for 20-40lbs, Large for 40-70lbs, Xlarge for 70-100lbs See complete sizing and safety info below under Product Description. See All of Our Pet Products! Click LuckyPet (found just under the title of this page)