It’s not every day a 27-foot-long hot dog zips down U.S. 41 ... Berens said when it comes to the coveted “Wiener Whistle,” she discovered it has become an heirloom of sorts to Midwesterners.

Sadly, my lips don’t pucker and I can’t make a sound without a mechanical whistle. One of the mysteries of whistling is the silent dog whistle. I wondered exactly how they work. Obviously, they are ...