TrustyPup Penquin Dog Toy with Silent Squeake Technology the Ultrasonic squeaker that only dogs can hear!.Super cute plush penguin in a great shape dogs love. The silent squeaker is perfect for the office and won't disturb your friends at work! Perfect for movie night at home or night time play, too!.Chew Guard Technology is a special manufacturing process that adds a super tough and durable lining to soft plush toys.