2008 Zhu Zhu Pets Rocky 8.4 Black & Gray Hamster Works. Where will your Zhu Zhu Zhu-oom? Just like a real hamster Rocky chatters, scoots, and scurries! Tested and works. Batteries are not included. Please see pictures. Thank you for your interest in my auction! If you have questions, please message me! I monitor my account on a daily basis. Thank you again!