Chimpanzees and bonobos are among the closest living relatives of humans. They share more than 98% of our DNA, highlighting the remarkable genetic closeness between species. Yet, these primates are ...

A shriek broke the dawn on the savannah, followed by more screeches and the rustle of branches: The wild Fongoli chimps were ...

Scientists have long focused on quantifying fear and other negative emotions in animals. Now they’re trying to measure ...

Nonhuman primates like bonobos and chimpanzees might engage in same-sex sexual activities to strengthen bonds, particularly in harsh environments or within strict social structures, a new study sugges ...

It is highly likely that Hume and Smith were acquainted with speciation. Here we suggest that Hume and Smith were ...

Many primate species have been observed engaging in same-sex sexual behavior. A new study suggests it likely developed evolutionarily to help reduce conflict and build bonds.

The philosophical conundrum is much subtler and more difficult. Jane Goodall not only observed the first use of tools by our primate cousins, the chimpanzees, but she also observed, to her horror, a ...

BECCA MILFELDA shriek broke the dawn on the savannah, followed by more screeches and the rustle of branches: The wild Fongoli ...

More than 59 different primate species have been observed participating in some kind of same-sex behaviors, making it extremely common.

While the majority of animals (humans included) roam the Earth, some of nature’s most fascinating creatures spend their lives ...

A growing body of research suggests same-sex behavior in nonhuman primates is important to social connections.