Abstract
The use of tools by capuchin monkeys in free and semi-free environments has been studied in Brazil for more than two decades, and the two wild populations submitted to long-term studies are located in Piauí, in the region of Fazenda Boa Vista (FBV), in Gilbués, and in the Serra da Capivara National Park (SCNP), in São Raimundo Nonato, with approximately 320km of distance between them. How…