Mandrill monkey makes 'pedicuring' tool

This crude pedicure is an example of deliberate tool manufacture and use

Related Stories

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.

Non-human apes, including chimpanzees and orangutans, can adapt basic tools for specific jobs.

One well-known example of this behaviour is termite fishing in chimpanzees, where the animals strip down grasses to make fishing rods that they then poke into termite mounds to snag the nutritious insects.

Start Quote

Mandrill at Chester Zoo (Image: Riccardo Pansini)

The gap between monkeys and great apes is not as large as we thought it was”

End Quote Riccardo Pansini Durham University

"It is an ability that, up until a few years ago, was thought to be unique to humans," said Dr Riccardo Pansini, who led the research.

The new findings, he said, indicate that monkeys' intelligence may too have been underestimated.

"The gap between monkeys and great apes is not as large as we thought it was in terms of tool use and modification," he told BBC Nature.

Dr Pansini captured the footage while studying stress-related behaviour in the zoo's mandrills.

His research during that time helped inform the design of a specially landscaped enclosure, which contained shrubs to give the animals hiding places. The design won an animal welfare award in 2007.

In the footage that Dr Pansini captured, a large male mandrill strips down a twig, apparently to make it narrower. The animal then uses the modified stick to scrape dirt from underneath its toenails.

Though the scientist was excited to witness this deliberate tool modification, he said it was not entirely surprising.

"Mandrills have been seen to clean their ears with modified tools in the wild," he told BBC Nature. "This was thought to help prevent ear infections and therefore might be an important behaviour in terms of hygiene."

He thinks the captive setting may have helped bring out this behaviour.

"Animals have more time in captivity to carry out tasks that are not focused on looking for food or mating," he said. "So in zoos, you can occasionally pick up behaviours that are a little bit strange.

Mandrill at Chester Zoo (Image: Riccardo Pansini) Mandrills are the fifth species of Old World monkey seen to modify tools

"In the wild this 'pedicuring' would be considered trivial," he explained. "But cleaning their ears with the same modified tool probably gave the animals some relief from the pain in their ears.

"So we're witnessing the same behaviour that's used in quite important tasks being adapted for a less important task," Dr Pansini said.

Dr Amanda Seed, an expert in primate tool-use from the University of St Andrews, UK, praised the researchers for capturing such interesting footage.

She added, though, that it was not entirely clear that the mandrill was deliberately modifying the stick for the specific goal of producing a "sharpened toenail-cleaning tool".

She told BBC Nature: "For me, the behaviour is closer to what we already know from other species, using a stick for self-cleaning purposes, than the tool modification of say chimpanzees - which rake their stick tools through their teeth to produce a brush for gathering termites.

"But these definitions are always tricky. You could say that as soon as an animal pulls a branch from a tree, they're modifying that branch."

Dr Sonya Hill a research officer at Chester Zoo, added that research findings from zoos could have a "direct impact on evidence-based conservation and husbandry practices".

"They can also contribute to a wider body of scientific knowledge, as this mandrill study has shown."

Mandrills at Chester Zoo (Image: Sonya Hill/ Chester Zoo) The enclosure the zoo designed for the mandrills won an animal welfare award

More on This Story

Related Stories

The BBC is not responsible for the content of external Internet sites

More from nature

  • Cardinal fish and ostracodFish filmed spitting 'fireworks'

    Film crew captures ostracods' spectacular defensive lightshow that makes predatory fish spit them out.

  • Arapaima'Locally extinct'

    A giant fish which used to dominate the Amazon river is now absent in many areas


  • DragonflyRapid reactions

    Dragonfly's super quick reactions recorded in slow motion by BBC film-makers


  • Wingless adult male of the midge Belgica antarcticaExtreme survivor

    Antarctic midge's small genome may be an adaptation to its extreme environment


  • Myotis midastactus specimen (previously identified as Myotis simus)Golden discovery

    A bat from Bolivia is described as a new species by scientists


  • Dinosaurs 'shrank' to become birds

    Huge meat-eating, land-living dinosaurs evolved into birds by constantly shrinking for over 50 million years, new research shows.

  • Would we starve without bees?

    Honey bees are under threat, and as pollination significantly contributes to the food we eat, what would we do without them?

  • Eggshells may act like 'sunblock'

    Birds' eggs show adaptations in pigment concentration and thickness to allow the right amount of sun for embryos, scientists say.

  • Female shrimps are more aggressive

    Female snapping shrimps are more aggressive than males when defending their territories despite their smaller claw size, a study shows.

BBC iWonder

  • Honey bee close-upInsect intelligence

    Are honey bees as smart as your sat nav?

  • Tyrannosaurus rex skull (c) Mark Williamson / Science Photo LibraryDinosaur dynasty

    One group of dinosaurs survived and their descendants can be seen all around us today


  • Brown rat cluse upRise of the rodent

    Reports of giant, 'super rats' are filling the headlines. But why are we being overrun by rats?


  • Cuckoo portraitHoliday hotspot

    What makes the UK such an attractive destination for visiting wildlife?


There have been 75 solar eclipses and 167 major volcanic eruptions in my lifetime

Nicole Malliotakis on Twitter comments on the events that have happened since she was born by using our personalised Your Life on Earth interactive infographic.

Get Inspired

ACTIVITY FINDER

More Nature Activities >

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.