Your pet 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 cage. Roll-about Ball can also be attached to FerreTrail Fun-nels with the use of Item SP-62220 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! Measures 10 Round. For Ferrets, Rabbits, Guinea Pigs, Pet Rats, Chinchillas, Unusual Pets.