Two dwarf hamsters, a male named Robo and his partner, Robbi, keep the wheel spinning.
The hamsters are crepuscular, like the African Pgymy Mice, but unlike the mice, are extremely active.
Both of them also have a bite despite their miniature size, and unsuspecting humans can draw back
a bleeding finger if not careful.
The mice are delightful companions for late night workers, constantly busy exercising on the wheel,
running up and down the bounds of their home, hiding and finding food morsels and just plain playing.