Chimpanzees are among the most intelligent animals on Earth - and also some of the most complex. They use tools, communicate, and even organize coordinated group hunts. But their behavior can also ...

When people find out we study chimpanzees, they usually ask about their dark side. “You know chimpanzees kill each other, right?” or “Aren’t they the only animals besides humans that wage wars?” ...

Chimpanzees have a reputation for being aggressive, while bonobos are often seen as their peaceful counterparts. This contrast has frequently been used to explain different sides of human nature.