Not really sure, Howler.

I called for about 30 minutes using only howls except for right at the end, I decided to throw in some fawn in distress. When I decided to call it quits, I stood up and started to reel in my speaker cord and spotted that dog trotting off from me. He was about 100 yards when I seen him and he was directly in front ofwhere I was sitting. So I am not sure if he was there the whole time, or somehow sneaked in on me. I was sitting on a hill with an unobstructed view of where he was, but never did see anything until I was picking up my gear.

Only dog I saw all morning too.