Individuals snap off branches (usually about 75cm in length) and, after removing the leaves, sharpen the ends using their teeth.<\/p>\n A hunter then climbs towards a hole and thrusts its spear into the cavity, killing or severely wounding any dozing galago inside before pulling out its skewered quarry.<\/p>\n \u201cFemales, who hunt with spears\u00a0more than males, can use these tools to hunt just as well but without the need to chase down prey,\u201d says Jill Pruetz, director of the Fongoli Savanna Chimpanzee Project. \u201cThis not only saves energy but allows them to hunt with their babies in tow, which avoids leaving them alone and at risk from predation.\u201d<\/p>\n