Kelenken, the "Winged Deity," isn't exactly popular enough to really be  considered a deity, but at least it isn't a weird herbivore like  Gastornis. But perhaps it qualifies  with its size; at two and a half meters tall, Kelenken was the largest of the "terror birds."  Terror certainly was the right word  to describe any animal with a  fierce, hooked beak such as this.  Incredibly agile and swift, Kelenken  chased down its prey without mercy.  It had two possible methods of  attack: blows from the beak or picking up and shaking. Blows from  the beak would shatter bones during chases, rendering its food immobile  and so it could administer the final blow. When picking up its prey, it  could vigorously shake it until its back broke, paralyzing it.   Living in South America during the  Miocene Period, its large size and  massive, 28-centimeter-long beak  made it king of the foothills that it lived in. These ancient foothills are what is now the giant Andes  Mountains. Kelenken roamed these future mountains using its spectac- ular beak as a weapon, likely  chasing down speedy ungulates. It  was not the only king of the hills, however; carnivorous mammal Patagosmilus also prowled this  land, but it is unknown how their  niches overlapped.