Rock-wielding monkeys make adjustments when cracking nuts
![capuchin monkey cracking nut](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/04/ticker_nutcracker_free.jpg?fit=860%2C460&ssl=1)
STRIKE FORCE Wild bearded capuchin monkeys, such as this adult male, adeptly crack open nuts by adjusting the force of each blow made with a pounding stone, a new study finds.
D. Fragazy
STRIKE FORCE Wild bearded capuchin monkeys, such as this adult male, adeptly crack open nuts by adjusting the force of each blow made with a pounding stone, a new study finds.
D. Fragazy