Greenies® - The Original Smart Treat. Dog's can't resist the taste! Helps clean teeth and freshen breath. Shaped like a toothbrush, the abrasive action decreases buildup of dental plaque. Totally Edible! Created by a veterinarian, clinical nutritionist and agricultural specialist. Does not contain by-products, preservatives, artificial flavors or colors. Improves digestibility. ADDITIONAL INFORMATION: Manufacturer: Granny's Pet Treats Size: petite for dogs under 20 lbs. (24 bones); regular for dogs 20-50 lbs. (14 bones); large for dogs 50-80 lbs. (8 bones); jumbo for dogs over 80 lbs. (4 bones)