I' ve heard this a few times in our cedar swamp - the last time at only 15 yards. Problem is, it' s so thick, seeing 5 yards at times is impossible. Mature dominant bucks make this sound to challenge another buck or to ideally, scare the intruding deer away. Does do not make this sound. All deer certainly will blow at something and stomp there feet to make it move when they can' t pick out the danger. But only bucks make the snort-wheeze.