It’s fun. It feeds. It’s a challenge your dog needs! Nina Ottosson Treat Puzzle Games fight boredom, help reduce destructive behaviors & exercise your dog’s mind. It’s hide & seek with treats, and dogs love it. Nina Ottosson treat puzzle games are a great way to engage your dog's mind with challenging and rewarding activity. The MultiPuzzle is perfect for super smart dogs that have already mastered level 1-3 games and need an additional challenge.