KONG Shells Bear Dog Toy. KONG Shells entertain dogs with a buffet of textures and reward through multiple ways to play. Dogs will be intrigued by the tough outer ballistic shell encased in flexible spiky nubs, which fulfil chewing instincts while cleaning teeth and gums. The inviting squeaker belly adds to the fun.Multiple textures for multiple ways to play. Tough outer shell and squeaker for added fun. Cleans teeth and gums.