Dog Twister Purple by Nina OttossonWhen you're looking for a toy for bored dogs who have mastered the simpler dog treat puzzles, this engaging level 3 advanced interactive treat puzzle from Nina Ottosson by Outward Hound is the perfect next step! The Dog Twister interactive dog puzzle toy features nine treat drawers for dog treats which are secured in place with nine white tabs. Just simply place the treats in the drawers, slide them in, and lock the white drawer tabs for an added