capuchin

She currently studies cooperation and other social behaviors in capuchin monkeys.

They even observed groups of capuchins traveling from one forest fragment to another, a sign that they’ve adapted to short bursts of time in the human-dominated parts of the landscape.

The authors point out that New Caledonian crows, Goffin's cockatoos, woodpecker finches, bearded capuchins, bottlenose dolphins, orangutans, gorillas and sea otters can also use tools flexibly.

Some, like the spider monkey, effortlessly swing through branches, while others, like the capuchin, display remarkable problem-solving abilities.

In one famous experiment, researchers trained two capuchin monkeys to hand them tokens in exchange for a cucumber snack.