In the 1960s and 70s, a group of chimpanzees astonished the world by learning sign language. Only two remain and one question ...

New research suggests wild chimpanzees have developed a far more nuanced communication system than previously realized, using several mechanisms that combine their vocalizations to create new meaning.

A bonobo demonstrated the ability to track imaginary objects in controlled tests, challenging the belief that imagination is uniquely human and hinting at deep evolutionary roots. In a set of ...

Humans are not the only species to combine concepts to build more complex meaning, a new study found. Bonobo chimpanzees combine calls in a manner similar to how humans structure words to make phrases ...