The IQube™ will not only keep pets occupied and eliminate boredom, but they also develop a dog's intelligence and puzzle-solving skills. Just place the soft plush balls inside the plush qube for dogs to remove over and over again. Durable and long lasting. Toy Sizes: 4.5" square - Small; 6.25" square - Medium; 7.5" square- Large.    It will make a great gift for your dog under the Christmas tree this year.