Across the forests of central and western Africa, two of the most remarkable primates on Earth live very different lives ...

For decades, ape experts have searched for cognitive abilities in this animal group that are similar to humans, in order to ...

The death of a possible genius was reported this week. Ai, a chimpanzee who was born in West Africa and came to the Primate Research Institute of Kyoto University in Japan when she was a year old, has ...

Intelligence comes in many forms, and some animals possess abilities that rival our own in surprising ways. Chimpanzees use ...

We remember Ai, a highly intelligent chimpanzee who lived at the Primate Research Institute of Kyoto University for most of her life, except the... Opinion: Remembering Ai, a remarkably intelligent ...