I called one in about 10 yrs ago, and was about to shoot it, but decided to hold off and see how close it would get. It came up, sniffed my boot from about 5 feet, then jumped back to about 15 feet, and started growling like a pissed off dog. I was so shocked, I started cussing at it, completely forgot that I had a mini 14 on my lap. After I kind of stood up, cussing, it took off. I ended up throwing 7 shots at it, missing each shot. I gave up, watched it run over 500 yds and it was gone. One of the most exciting calling experiences I've had. I can still remember it bearing it's teeth, and it's eyes....
