Your ferrets will have a ball playing hide-n-seek with their very own roll-about ball. Ferrets, guinea pigs, dwarf rabbits, chinchillas and pet rats love playing in and climbing through the six openings on roll-about ball. Roll-about ball is safe for use inside any pet"s home and is perfect for interactive playtime outside the home. Roll-about ball can also be attached to ferretrail fun-noels with the use of ferretrail add-on attachment ring that is sold separately. With openings on every side of the roll-about ball, the possibilities are endless for the ferretrail fun-nel system you can create for your favorite pet.