Chimps Use Spears To Hunt and Fight - Jill Pruetz

The "Planet of the Apes" may seem like purely fictional nonsense. But at least one group of chimps in Senegal is "manufacturing" tools. Emerging Explorer Jill Pruetz has been studying the apes and has seen them create spears by removing excess branches and sharpening the end to a point. They then use the weapons to whack snakes, hunt bush babies and ward off leopards.