EXTRA BONES FOR NINA OTTOSSON DOG GAMES: These bone pieces are for replacing damaged or lost bones from the Dog Brick, Dog Smart, and Dog Tornado games.
KEEP YOUR PUP PUZZLING: Place bones over treat compartments in Nina Ottosson's Dog Brick, Dog Smart, or Dog Tornado games.
GREAT FOR MENTAL STIMULATION: Bones fit over treat compartments of select Nina games to test your dog's problem-solving skills.
UP THE CHALLENGE: Hide treats under the extra bones to add more layers to your dog's puzzle game.
PLAY IT SAFE: No toy parts are indestructible. Do not leave parts with unsupervised pets. Remove and replace if damaged.