Zhu Zhu Pets are innovative, realistic, interactive, plush, and artificially intelligent hamsters that talk and move around in their own playsets. Zhu Zhu Pets include two play modes: nurturing mode where the hamsters coo and purr and adventure mode where the hamsters explore their habitat with intelligent audio and mechanical responses to various habitat stimuli. Over a dozen add-ons can be purchased to build an ever-evolving hamsterworld for your hamster to play in and explore.