India, Sept. 5 -- Optical illusions are all the new rage on social media. From spotting the odd word out to spotting concealed animals, there are a variety of such challenges going viral on the internet. The latest optical illusion challenge involves finding a concealed animal in the backdrop of what looks like a home's doorway.

This optical illusion features a tiny frog expertly camouflaged in plain sight in a home's doorway. Posted on Reddit by user bigboybrad27 on the popular community Find The Sniper, the optical illusion quickly went viral as users raced to locate the hidden amphibian.

The challenge is deceptively simple: find the frog in a picture where it blends so seamlessly into its surroundings. Most people miss it at first gl...