Pink Hamster Wheel, the Wodent Wheel 'Jr.' 8" with Lavender Track Rodents are attracted to the wheel's entry holes, which also offer a really nifty effect when watching them run. Hamsters avoid broken legs and strangulations. NOT RECOMMEND for sugar gliders (their tails can get damaged by the center axle). The semi-enclosed design and the solid rear wall also makes rodents, who are natural 'wall-huggers,' feel much safer as they run.