The Nature Index tracks primary research articles from 145 natural-science and health-science journals, chosen based on reputation by an independent group of researchers. The Nature Index provides ...

Geladas (a male and female in the Simien Mountains) signal their status with the livid skin on their chests. Anup Shah and Fiona Rogers Geladas are isolated, oddball monkeys that science has largely ...

Shortly after giving birth, a mother and her newborn face a dangerous threat. Shortly after giving birth away from her troop, a new mother langur and her newborn face a dangerous threat: wild dogs ...

A baby macaque has adopted a stuffed animal after being rejected by his mother. Videos of the six-month-old, named Punch, carrying his companion around his enclosure at Japan’s Ichikawa City Zoo have ...