Chimpanzees are our closest living animal relatives. They can uselanguage; they make and use tools, and have traditions, whichthey pass from one generation to the next. Like us, they kiss,hug and comfort each other, form life-long friendships and grievefor their dead. They can also hold grudges for years, and evengo to war against their enemies! The story of chimpanzees-fromthose that use sharpened spears to hunt, to those that have theirown ‘crossing guards' to help them travel safely.