[quote]Scientists observed troop members snapping off branches, removing the leaves and even using their teeth to trim and sharpen the ends. On average, these tools were around 75 centimeters (30 inches) in length. Weapon in hand, the chimps would then creep up on sleeping bush babies and stab them, either mortally or wounding them enough to make them easy to snatch and kill with hands and teeth. [/quote] This is -blam!-ing incredible.