Scientists have solved one of nature’s greatest mysteries: How do big bull elks produce an eerie shriek that sounds like the Ringwraiths from The Lord of the Rings?
Read more about how these large North American deer produce their bloodcurdling screams: http://news.nationalgeographic.com/2016/04/160420-elk-animals-science-sounds-wildlife/
Click here to read more about elk: http://animals.nationalgeographic.com/animals/mammals/elk/
Quiet Alaska Suburb Moose Battle: http://on.natgeo.com/1T1TelR
Video courtesy Roland Frey
Audio courtesy Megan Wyman
Associate Producer: Jed Winer