Hear that? That's the sound of peace and quiet when your pup is squeaking the ultrasonic squeaker in Hear Doggy! toys! Hear Doggy! durable dog toys feature silent squeakers that allow your pup to have squeaking satisfaction without losing your mind. It's not a gimmick. You can tell these dog toys squeak because your dog will respond to the toy when you push the silent squeaker. This toy is perfect for households with sleeping babies, for folks that work the night shift, and for people who work at home. Save your sanity with Hear Doggy! ultrasonic squeaker dog toys that use sound frequencies too high for human ears to detect.