Macaca fascicularis, the crab-eating macaque, has the ability to use tools, such as stones, to open oysters and crabs—hence its name.

https://doi.org/10.1186/gb-2012-13-7-r58. Oct/16/2011

Authors: Alison Cegarra Saravia, Beatriz María Gallardo Aguilar, Andrés Hervás Gómez