Ultrasound for Dogs Joke is an app, a simulator that will help you scare away dogs as a joke! Run one of the low ultrasound frequencies and try to scare your dog or your friend's dog. Prank somebody as if you can scare the dogs off with a whistle. Attention: The game was created for fun and does not do any harm! This application is not a real ultrasound for dogs, but just simulating it - this is a simulation / joke application!