The Orbee-Tuff® Mazee is clearly engaging, clearly rewarding, and clearly fun! This interactive puzzle toy offers hours of long-lasting, brain-stimulating entertainment for dogs of any size. The translucent and pliable Orbee-Tuff outer shell combined with the harder inner maze activates several of the dog's senses - they can hear, see and smell the treats while they solve the puzzle. Stuff with treats and enjoy!.