Here's a breakdown of their key features:
* Interactive: They respond to touch and sound, moving around, making noises, and interacting with each other.
* Various Models: Different Zhu Zhu Pets have unique personalities, colors, and accessories, making them collectible.
* Playsets: There were also a variety of playsets, like houses, tunnels, and wheels, that could be used with the hamsters.
* Popularity: They were a huge hit with children, selling millions of units and becoming a cultural phenomenon.
While Zhu Zhu Pets have faded in popularity since their peak, they remain fondly remembered by many who owned them as children.