Well, as the OP, I guess I should share my experience. I DID use calf distress, and I was in cow pastures.......I had cows in adjoining pastures, and cows in the pasture I was calling in....long story short, no coyotes came in and no cows stampeded or freaked out. I had MANY cows perk their heads up, I had a handful walk closer to me to check out the "calf." I didnt have any cows run in, or run through a fence or anything else described by some in this thread. So my question is, how many have actually used calf distress and how many are just talking and making things up based on assumption or what they "think will happen," if one was to use calf distress. It was made to be a BIG, DANGEROUS, POSSIBLY UNETHICAL thing to use that sound, and well, ABSOLUTELY NOTHING HAPPENED. Just my .02....Have a great day guys!