By Liz Kimbrough Deep in the rainforest, the monkeys are yodeling. Their wild calls echo across the foliage, sending signals ...

The capuchin monkeys were seen carrying at least 11 howler babies between 2022 and 2023. “This was very much a shocking finding,” said Zoë Goldsborough, a behavioral ecologist at the Max ...

A howler monkey infant, only a few days old, clings to a subadult white-faced capuchin monkey as it uses tools. Brendan Barrett / Max Planck Institute of Animal Behavior In June 2022, while ...