re: do hogs growl??

Heard one a few years ago make a loud arse roar. He would do it every minute or two and heard him making his way down a creek. Suspect another dominant boar was in his area or something. I'll admit, it made the hair on the back of my neck stand up and i was a little shaky walking out with a single shot 45-70 and small led light clipped to the bill of my cap