There is nothing better than hay to a fibrevore - except a hay coated parchment box stuffed full of hay! Pets will love the fun and challenge of destroying the cubes to nibble on the hay and marigold blossoms stuffed inside. Smaller pets might even chose to nest inside them.  Our medium cube (12.5 x 12.5 x 12.5cm) is for all small pets including rabbits, Guinea pigs, chinchillas and degus. Hamsters, gerbils and mice might even nest inside it! Please note that we suggest for Guinea pigs and smaller rabbits that you supervise the use of the cube with your pet (at least initially). All pets vary in size and the heart shaped windows are designed to be chewed and opened up by pets. If you are unsure then as with all other similar products it's recommended you check you are comfortable with the size of the windows.