We may receive a commission on purchases made from links. When you hear the term "nutcracker," you likely think of the wooden decor items that populate every big box store during the holiday season.

They say a bad worker blames his tools – but it’s hard to imagine a capuchin monkey using such an excuse. The crafty little monkeys of Boa Vista in Brazil are often seen using heavy rocks to crack ...

Different chimpanzee communities may utilise different kinds of stone tools to crack nuts. Numerous scientific studies have referred to early human-made tools. Hammerstones, stone cores, and sharp ...