Nyla Durabale Dental Dinosaur Assorted. These 6 3/8 Inch Long Nylabone Have Been Flavored And Were Designed For The Most Powerful Chewers With A Unique Raise Nubs Helps Clean Teeth, Massage Gums And Helps Control Tartar And Plaque. Comes Assorted In Brontosaurus, Stegosaurus, Or Tyrannosaurus Rex Models.