 Only those with 20/20 vision can spot 'hidden beast' in this tricky optical illusion

A Reddit forum post revealed this optical illusion, stumping thousands.

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Spotting the beast may require 20/20 vision.

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On r/FindTheSniper, it was captioned "Find the brown bear."

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The brainteaser photo received 12,000 upvotes and 1,400 comments as people battled to answer it.

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The brainteaser photo had 12,000 upvotes and 1,400 comments as people struggled to solve it.

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There's a fallen tree in front and snow on the mountains behind.

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There's a fallen tree in front and snow on the mountains behind.

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This challenging optical illusion's 'hidden beast' is only visible to 20/20 eyesight.

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Thanks For Watching

[{"selector":"#anim-16054b93-1ee1-4df5-8b0a-3bad2e66208e","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-baec9c46-27a3-4ced-ad91-8036291b562a [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Luis Fonsi Tried to Get Ariana Grande on ‘Despacito’ Before Justin Bieber Learn more