Nylabone Fun Dura Chew Shapes Dog Chew Toy Dura chew Toys Are Made To Be Long Lasting For Powerful Chewers Easy-To-Fill Middle Good For Peanut Butter, Wet Canned Food, Cheese, And Other Treats Bristles raised during chewing help clean teeth and control plaque and tartar DuraChew toys are made to be long lasting for powerful chewers Easy-to-fill middle good for peanut butter, wet canned food, cheese, and other treats Bristles raised during chewing help clean teeth and control plaque and tartar