The I Qube is a heavy-duty cloth square with openings on every side. Inside the square are 4 squeaker balls. Your dog will have fun removing the balls from the toy. This is a toy that challenges and develops your dog's intelligence and puzzle solving skills. Our dogs really enjoy playing with their I Qube. We think this toy should only be used when you are there to watch and help. A frustrated dog might chew on the cube to get a ball out and ruin the toy. You don't want that. When our dogs are playing with the I Qube, we're there to supervise and replace the balls once they have been removed. Then we pick up the toy when playtime is over. Knowing your dog's snout size and overall size you can figure out the proper size toy to get. The side openings are: 3.5" on the Jumbo.
