Ancol Just 4 Pets Small Animal Food Ball Holder is the perfect boredom buster for your small pet! This hygienic metal wire ball is designed to be stuffed with hay or chopped vegetables, providing your pet with an exciting way to exercise and snack. Simply hang the ball from the top of your pet's cage or hutch with the hook provided and watch them have fun. This 9cm ball is ideal for rabbits, guinea pigs, hamsters, gerbils and more.