We aren’t the only animals that like to take care of other species. A new study finds that the roots of keeping a pet may ...

This social behavior might reveal the evolutionary roots of traits that underlie pet-keeping in humans, scientists say, from ...

All told, 88 primate species were seen interacting with 127 different species.

Humans are the only primates with true, everted lips — a biologist unpacks the competing theories for why, from feeding and ...

What you'll discover in this article ・A study suggests humans have a similar day-to-night time activity distribution to ...

Scientists have long thought humans have a uniquely difficult birth compared with other primates. And it's true that, from an evolutionary perspective, we face an obstetrical dilemma. As we evolved to ...

Humans appear to be the only species clearly proven to shed tears specifically because of emotions. Elephants, primates, and dogs show behaviors and biological responses that come closest to human ...

On dry nights, the San hunter-gatherers of Namibia often sleep under the stars. They have no electric lights or new Netflix releases keeping them awake. Yet when they rise in the morning, they haven’t ...

Researchers have widely accepted that what sets humans apart from nonhuman primates are prefrontal cortex–driven behaviors such as decision-making, reasoning, planning, and attention. In a new ...