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Good article but by following embedded links TIL:
New World capuchin monkeys are well-known by their ability to solve problems using stone tools that have the characteristics and morphology of some human-made stone tools.
I knew chimps etc used sticks but was unaware of actual stone tool use by monkeys
Haha. Glad I’m not the only one whose mind went straight to this.
And we didn’t let em off the hook!