Our dog, Bailey, is a siren chaser. At least, he would be if he could figure a way to get out of the yard. Instead, at the sound of a fire engine, he lets forth this crazy, lonely wail. It's a bit eerie, really. It sounds part wolf. I've never been able to capture it on video until now. Unfortunately, it was completely dark when I took the video so I spliced the audio onto a still background (picture). You may have to turn the volume up quite loudly to catch it.