This is a great app for your iPhone if you love teasing your dog!
Conveniently named “Dog Teaser” this app give you opportunity to watch your dog go absolutely crazy by a number of different sounds… Choose from: high-frequency dog whistles, Bark, Howl, Growl, Cat Fight, Cat Meow, Door Bell, Squeaky Toy and Fireworks.
The app can be purchased here for $0.99