These medium sized veterinarian recommended treats are made with real chicken and come in a fun bone shape. All Science Diet Canine Treats are fortified with antioxidants and nutritionally balanced to provide customized nutrition for your dog and help clean teeth and freshen breath. The light treats are low in calories to help maintain a healthy, trim body and the skin and coat treats are made of vital fatty acids to help avoid dry, flacky skin. Puppy treats are for puppies up to 12 months as well as pregnant /nursing mothers. Adult treats are for dogs 1 - 6 years old. Treats are approximately 2" each.