A long-tailed macaque uses a stone tool to open an oyster, from the BBC series ‘Monkey Planet’

The BBC recently ran a series of new programs under the title ‘Monkey Planet’, looking at a variety of primate species around the world. The third of the programs, titled ‘Master minds’, included footage and discussion of the stone-tool-using macaques of Thailand. Two groups are shown, from islands on the west and east of the country, both of which are included in the primate archaeology project. Both the groups open attached shellfish using small pounding tools, in addition to using larger tools to pound open unattached foods on anvils.

The episodes are available to watch through the BBC iPlayer service, and you can also find footage of the macaques online at: