At the start you choose one of three different coloured ferrets. The colours are randomly chosen.
The ferret is kept in the cage much of the time. You have to keep its water and food topped up, and clean its litter box. You can take your ferret out for walks or to play with. You can even play minigames. One is a race, one is putting together a picture and the other is dancing.
Despite the popularity of ferrets in other countries, especially America, this game was never released outside of Japan. This may have been due to lack of popularity in Japan.