A team of researchers with the University of Tokyo, Área de Conservación Guanacaste, the University of Calgary and Tulane University has reported observation of an instance of cannibalism in wild white‐faced capuchin monkeys. In their paper published on the open access site Ecology and Evolution the group describes an incident in which adult wild white‐faced capuchin monkeys consumed some of the remains of a 10-day old infant.
source https://phys.org/news/2020-11-instance-cannibalism-wild-whitefaced-capuchin.html