Feline Greenies Oven Roasted Chicken Flavor Dental Cat were designed to help keep your cats mouth clean and healthy. With their unique shape and crunchy texture, these cat snacks are proven to clean teeth and reduce tartar. Plus, these irresistible little snacks also work to freshen cat breath, letting you both enjoy cuddle time even more. But because these treats have added vitamins, minerals, and taurine, they do more than just offer cat teeth care.. They offer complete, tasty nutrition, too.