Happy Teeth Spinach is a great tasting, all-natural dental chew. With its loofah like texture, Happy Teeth clean teeth, fight against plaque and tarter build-up, and freshen breath. The best part, there is no medicinal smell or taste – just a great tasting treat! Happy Teeth is good for dogs of all ages and sizes; from puppies to seniors. Happy Teeth are lactose and gluten free, and are easily digestible.