10 inch Ferret & Small Animal Ball is for use in cages for chinchillas, guinea pigs, hedgehogs and ferrets, as well as snakes, lizards, and, if suspended from above, by birds and smaller parrots and love birds. The ball has four 3 1/2 inch holes around the waist, and two additional 3 1/2 inch holes at each end, providing a maze-like play area with plenty of ventilation in the event the animal chooses to sleep inside the ball. By special order, balls with two 3 1/2 inch holes and a metal eyelet for hanging are also available.