The decibel level of elk bugling is 90 dB at 4 meters, lawnmower and food blender are two items that have similar sound levels. I have heard the bugling as far as 1 km away, with elk's larger ears, they would be able to hear the bugling from even further distance. this is important for the females who want to mate with a stronger male and help keeps weaker males away. Over 85 dB can lead to damage for human ears, another reason for us humans to keep our distance from wildlife. The recommend safe distance from elk i at least 30 meters. at that distance the bugling sound level comes to 72.5 dB. Close to the sound level when you're using a vacuum.