Petface Hear Doggy Dizzy Dino Puppy Dog Play Toy Teddy Ultrasonic Purple | 22027 Patented squeaker tuned to an ultrasonic frequency that is out of a human range but still fun for your pet Ultrasonic toy that your dog can hear it but you cant Hear Doggy Range Animal shaped dog toy Size: 34 x 16 x 9 cm (approx.)