When Ruppert and her colleagues noticed that in 10 years, more than half of the baby pig-tailed macaques born in the group died before they turned a year old, they knew something was off.

At Angkor Wat and other temple ruins nearby, macaque monkeys fed by YouTubers creating videos are stealing visitors’ food and ...

The abuse of monkeys at the Angkor ... crowded around a small group of long-tailed macaques, pushing in close to get shots of a mother with a baby on her back and tracking her everywhere she ...

Mother macaques bear one baby every 20 months or so and do most of the parenting. Wee ones nurse for less than a year but stick close for several more. Young males eventually leave to vie for ...

“One mother held her dead child in her arms for four days. This affected me deeply.” Unlike most primates, Barbary macaque males often tote babies around, says Bonaventura Majolo, founder of ...