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 Planck ...

Hidden in video footage from 2022 to 2023, they spotted capuchin monkeys carrying at least 11 infant howler monkeys. The species are unrelated and not known to interact closely. The footage came ...