Quote Originally Posted by Robh3606 View Post
Hello Heather

Ever mess with dog's? Discovered by accident! Play wolves howling Wendy Carlos Sonic Seasonings or do a high frequency sine sweep. One initiates curiosity and a determined search the other a quick exit out of the room!

Rob
My dog will react to me just emitting a VHF whistle, too high for me to hear. I just do a soft whistle and I keep bringing up the pitch (to a barely audible white noise) and after I can't even hear the frequencies (very high and low in volume), she starts swiveling her head around looking for the sound.