Driving other species to extinction might be something of a primate proclivity. A new study suggests that monkeys in Thailand are using tools—just like us—to overfish some tasty shellfish. Long-tailed macaques in a national park in Thailand have figured out how to use rocks to crack open snails and oysters.
And they have been busy.An international team of researchers studied two groups of the macaques on islands in Khao Sam Roi Yot National Park. On one of the islands, NomSao, there is a small population of monkeys that use large rocks to break open big shellfish along the shore. On the other island, Koram, a denser population of monkeys uses smaller stones on smaller shellfish. The researchers suspect that the size…
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