Nina Ottosson Wooden Dog, Domino,Pet PDC Distribution,Dog Domino" /> These puzzles are for supervised use only and are designed to promote interactive play between you and your dog while satisfying their natural need for mental and physical stimulation. The only puzzles currently on the market that meet California's strict health and environmental standards for composite board. A terrific outlet for channeling energy and providing the mental stimulation necessary for a healthy well balanced dog. Manufactured in Sweden