The pygmy chimpanzees “seem to combine calls to convey meaning that… Humans are not the only species to combine concepts to build more complex meaning, a new study found.

The pygmy chimpanzees “seem to combine calls to convey meaning that cannot be conveyed through single calls alone,” the researchers wrote.

Chimpanzees and bonobos are amazingly similar to us—and each other: The two species of great ape have genomes that are nearly ...

Chimpanzees and bonobos split into different species about 1.7 million years ago. The widely accepted hypothesis is that their common ancestor lived north of the Congo River.