Bali’s thieving monkeys can spot high-value items to ransom

Study finds macaques go for tourists' electronics and wallets over empty bags and then maximise their profit

At the Uluwatu temple in Bali, monkeys mean business. The long-tailed macaques who roam the ancient site are infamous for brazenly robbing unsuspecting tourists and clinging on to their possessions until food is offered as ransom payment.

Researchers have found they are also skilled at judging which items their victims value the most and using this information to maximise their profit.