Animals will love the fun and challenge of destroying the cubes to nibble on the hay and marigold blossoms stuffed inside. Smaller animals might even chose to nest inside them. The larger cube (20 x 20 x 20cm) is ideal for rabbits, Guinea pigs, chinchillas and degus. Our medium cube (12.5 x 12.5 x 12.5cm) is for all small animals including rabbits, Guinea pigs, chinchillas and degus. Hamsters, gerbils and mice might even nest inside it!