These interactive toys occupy and challenge your dogs’ cognitive skills. These toys provide enrichment for your own dogs. As descendants of wolves, most dogs instinctively enjoy the challenge of hunting and seeking out the hidden food in our Puzzle Toys. It keeps your pets healthy, happy and engaged! All games include instructions and tips. Each cup has a scent vent to allow food smells to pass through. The Star Spinner measures 10” wide x 10” high. ”The underside of each puzzle has rubber soles to prevent slippage on any surface.