A group of chimpanzees is called a community and can have anywhere from 20 to 150 members. Within the community, chimps have friendships, look after each other and even comfort friends who are upset — just like humans do with people they care about.
Chimpanzees in Guinea are famous for their tool use. They select flat stones to use as hammers and crack hard-shelled nuts on flat rock 'anvils'. Young chimpanzees watch their mothers do this for years before they learn the skill themselves. Scientists call this cultural learning — the same kind of learning that happens when children watch adults and copy them.
Their diet includes fruit, leaves, nuts, seeds and insects. They also love honey and will use a long stick to poke into a beehive and then lick the honey off. Their hands are very similar to human hands — they have thumbs and can grip things very precisely.
Chimpanzees communicate using a rich variety of sounds — hoots, screams, grunts and barks — as well as facial expressions and hand gestures. Researchers have identified dozens of different calls that seem to mean different things in different situations.