HeartTails are the ultimate fetch toy. They're easy to pick up and throw, easy to catch, and fun to shake and pull. The natural rubber heart bounces and squeaks. Soft rubber nubs clean teeth and gums during play. HeartTails are made of fine faux fur tails and reinforced bungee cord. HeartTails are two toys in one: rubber and faux fur. Small for dogs up to 15 lbs. Medium for dogs 15 to 60 lbs. Large for dogs over 60 lbs.