Make your Zhu Zhu Pets life wheel good with the Zhu Zhu Pets Hamster Wheel with Tunnel! Theres nothing that the energetic Zhus love more than running around on their Hamster wheel. Place your Zhu (sold separately) near the tunnel opening and theyll scurry inside and onto the wheel -- just like a real hamster! For an authentic pet feel, add the Zhu Zhu Pets Hamster Wheel with Tunnel to your collection. For ages 4 years and over.