Meet the feathered 'Terror Birds'.
(02:22)Megalodon was the biggest predator ever to swim the oceans who ruled the seas for 20 million years.
(01:06)Prehistoric Predators Photo Gallery
Celebrated as one of the greatest athletic feats of any kind, Honnold’s climb set the ultimate standard: perfection or death.
Go on the hunt to determine which aspects of your personality reveal the Big Cat that roars from within.