Mrs Best spent three nights in hospital and still attends hand occupational-therapy sessions every fortnight.

Dr Michael Gumert, a primate researcher from the Nanyang Technological University's psychology division, said that people can often provoke macaques without realising it.

Dr Gumert said: "They may have done something careless like move too quickly or move too close to the monkey.

"They (the macaques) may already be riled up and redirect aggression from a previous conflict."

One should avoid eye contact and stay as still as possible in the event a monkey becomes aggressive, he added.

In response to My Paper queries, Ms Kartini Omar, director of parks at the National Parks Board (NParks), said that monkeys would return to the forest for food, if food is not available from humans.

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