This is a whistle that professional dog trainers use. It can be used as a toy, but PLEASE be careful. It's extremely loud! Do not use it indoors unless you're comfortable with controlling the sound. It takes practice to be able to use this, but once you know how, you can make different types of sounds to train your dog.
Basic Instructions....
Bite together on the two bottom tabs, blow gently, and play with your tongue on the bottom to make the desired sound. Good luck! Remember, it's loud.
Attach it to a string and use it as a necklace, so it's close at hand when you need it.
Leave some comments, I'd like to know how it works :-)