AN optical illusion has puzzle fans scratching their heads, looking for an answer.
Onlookers have been told that if they can spot the zebra lurking among the giraffes, they will have 20/20 eyesight and a genius
For those who enjoy puzzles, there's an additional catch: you have nine seconds to find the counterfeit animal.
Rainteasers are intended to deceive our vision and can be used as simple indicators of intelligence.
According to Dr. Amber Johnston, a clinical psychologist in neuropsychology, brainteasers serve to keep our brains active and young, as well as having a favorable impact on mental wellbeing.
She stated: "What is generally established about both the brain and mental health is that people are extremely motivated to learn.
"Anything that provides new challenges and learning opportunities has been shown to increase well-being and happiness, with research demonstrating that people prefer a novel and challenging work over an easy,
repetitive one, even if there is no reward for participating in either.So grab a timer, set it to nine seconds, and demonstrate your puzzle-solving abilities.
Although it appears to be an ordinary image, finding it is a difficult task that takes the average person more than a minute.
Only 16% of individuals can find it within 30 seconds, so congratulations if you have already found it!
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