Go Go Pets Hamsters (also known as Zhu Zhu pets) are among the hottest new toys this year! There are 4 furry little Go Go hamsters: Chunk, Pipsqueak, Squiggles and Numnums — Each one has its own unique personality! These cute little Go Go hamsters can play in a “loving mode” (to pet them and hear them chatter and squeak) or “Explore Mode” (to let them scoot and scamper in their hamster habitat or on the floor). The Go Go pet Hamsters are perfect for kids age 3 year old to age 12.