YOU could have the eyes of a hawk if you can spot the hidden mountain lion waiting to pounce.
Camouflaged among this rugged scenery is well-hidden feline predator.
Mountain lions are famed for their ability to blend into the countryside as they stalk their unsuspecting prey.
And in this real-life picture, the hidden 200lb cat is no exception.
The animal has left social media users stumped after the US Fish and Wildlife Service shared the picture, which has gone viral.
In the post, the UFWS said: "Where's Waldo: Mountain lion in Washoe County, Nevada edition... can you spy the big cat."
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The image shows some rocks and wild fauna but somewhere nestled away is the mountain lion.
Hundreds of people have taken up the challenge to spot the animal with some succeeding and others left dumbfounded.
Can you spot it?
If not don't worry, the answer is in the picture below.
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In the bottom left-hand side of the picture, circled in red, is where the mountain lion is hiding.
For most puzzle-goers, spotting the large cat was impossible.
"It's just a photo of rocks, isn't it," a Facebook user said.
"What am I looking at," one said.
"Can someone message me and tell me where this lion is, I've been staring at my screen far too long," another said.
Brain teasers are proven to sharpen peoples' awareness and increase mental stimulation.
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