Heard a growl once. It came from a 2 1/2 yr old 10 pt who was chasing a doe. I have heard bucks and does grunt alot.I have had the fortune to have heard a breeding sequence once of an estrous doe bellowing likethe primos can and a buck doing the tending grunt sounds. Before I saw them, I thought someone else was in the woods with me. Itwas awesome. The doe bleated probably 5 to 6 different times.