A crude “pedicure” carried out by a mandrill at Chester Zoo suggests the monkeys are capable of more advanced tool use than previously thought.
Scientists from Durham University, UK, filmed the mandrill stripping a twig and using the resulting tool to clean under its toenails.
They published the findings in the journal Behavioural Processes.
Mandrills are the fifth species of Old World monkey seen deliberately modifying tools.
Watch the video below!