The video examines the long-standing fear that piranhas can devour a human. It breaks down how these fish actually behave in the wild and what triggers their aggression. Viewers learn why most ...

Yasmin Vieira, 9, was sitting on a deck with her legs in the water when she was attacked at Lago Sul in Brazil on Sunday, June 8 Getty Nine-year-old girl Yasmin Vieira was bitten by flesh-eating ...