Predation By Chimpanzees
A recent study of the Western chimpanzee has revealed that local chimps hunt the Senegal bushbaby using fashioned spears. During the study it was observed that the chimps searched for hollows where a bushbaby might reasonably be expected to sleep. Once such a roost was found, the chimps broke a branch from a nearby tree and sharpened the end using their teeth. They would then rapidly and repeatedly stab into the roost. After a period of stabbing, they removed the wooden spear and tasted or smelled the tip, presumably seeking blood. Once success was confirmed in such a manner they reached into or smashed the roost, retrieved the body of the bushbaby and ate it.
Though this method has been observed to be successful once in twenty-two attempts, it is more energy efficient than the traditional method of chasing the small mammals and cracking their skulls on a nearby rock.
Read more about this topic: Senegal Bushbaby