A group of Bolivian monkeys at the London Zoo have started stealing sunglasses off the top of tourists' heads in the recently warm and sunny weather, the BBC reports.
But a zookeeper tells the BBC that they have sprayed the glasses with a bitter-tasting repellent (sort of like that stuff to stop biting your nails?) to wean the animals off the not-so-tourist-friendly habit.
WATCH the adorably mischievous animals below:
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