The San Francisco Zoo is soon saying goodbye to its three chimpanzees -- Twiggy, Gombus, and Michael -- as it plans to ...

Engelmann says that from the beginning of the Western intellectual tradition, people thought that only humans are rational.

Whether you realize it or not, you spend a large chunk of your day weighing conflicting evidence. It is a hallmark of human ...

Chimps may revise their beliefs in surprisingly human-like ways. Experiments showed they switched choices when presented with stronger clues, demonstrating flexible reasoning. Computational modeling ...

Chimpanzees are more likely to engage in play or groom each other if they see others performing these social behaviors first, researchers report. Chimpanzees are more likely to engage in play or groom ...

If there was ever any doubt about the impact Jane Goodall had on the field of animal research, one Instagram video explains it all.

Many insects do produce antimicrobial or anti-inflammatory substances, so there is possibility they are medicinal.

New research suggests chimpanzees can rethink their choices when new evidence emerges, a hallmark of human-like reasoning.

The San Francisco Zoo announced Thursday it will say goodbye to its three remaining chimpanzees as it temporarily shutters ...