Dunn’s team analyzed the biological “budget” of these primates and found a direct negative correlation: males with large ...

In the Great Smoky Mountains, an auxiliary team of élite outdoorsmen answers the call when park-goers’ hikes, climbs, and ...

The capuchin monkeys were seen carrying at least 11 howler babies between 2022 and 2023. This photo provided by researchers shows a baby howler monkey clinging onto a young adult male capuchin monkey ...