6 Packs 2.5 oz. bags Now the popular Greenies Smart-Treats are available for cats too! Feline Greenies can help prevent plaque and tartar buildup that can lead to dental problems. Dental health is important for overall health, so a treat that helps achieve this is a wonderful thing for your cat! An independent pet nutrition center, after testing the effects of Feline Greenies on tartar and plaque accumulation, found:37% reduction in dental tartar 19% reduction in plaque 21% reduction in gingivitus Cats have a keener sense of taste than dogs, so the folks at Greenes kept our finicky friends in mind when developing these delicious flavors: Ocean Fish, Salmon, Chicken.