A photograph has well and truly baffled the internet this week - where are the sheep?
Scroll on to see for yourself...
Now, optical illusions will never cease to amaze us.
For decades now, these clever tricks of the eye have left us completely fascinated - if not a little confused.
Let's take a quick look at some of the best examples...
Can you see the hidden cat?
You can only see this optical illusion if you shake your head (I’m serious) 😂 pic.twitter.com/WhtZ1b0r4t— Dr Michelle Dickinson (@medickinson) January 10, 2019
If you zoom out on the original illusion, or look at a very small version of the image, the cat should become clear.
What color are the circles in this image?
A new Munker illusion, which I call confetti. All the dots in the background are the same color (RGB 250, 219, 172) but are perceived as four different colors. The differences are subtle, though, and depend on the size of the image when it's viewed. cc @AkiyoshiKitaoka pic.twitter.com/vT6x64LLTy— David Novick (@NovickProf) July 18, 2018
This colorful image went viral in 2018 after its creator, University of Texas professor, Dr. David Novick, shared it on Twitter.
Despite what you may see, it turns out all the circles are actually the same color. "The differences are subtle, though, and depend on the size of the image when it's viewed," Dr. Novick tweeted.
Who's wearing high heels here?
At first i thought he was wearing the heels pic.twitter.com/GSqurm3AcE— Charles Joseph (@Boom_likean808) May 24, 2018
In May 2018, a Twitter user posted a picture of 2 coworkers laughing and hugging - however, it looks like the guy in the photo is rocking a light blue shirt, white skinny jeans, and black heels, when it's infact the woman.
If you stare at this image for around thirty seconds, it will disappear before your very eyes.
Stare at the image for about half a minute without moving your eyes and watch as it gradually disappears. This is a variation of #Troxler’s effect which essentially says that if you fixate your eyes on a certain point, stimuli near that point will gradually fade. pic.twitter.com/qjIrhKpO2V— David McPhillips (@primaryeyecare1) March 12, 2018
Well, not really.
The image, which was posted by Dr. David McPhillips of Primary Eye Care Associates, is a result of a famous optical illusion called Troxler's fading circle.
Is it a hole in his arm? Or just a clever tattoo?
A photo of this tattoo went viral in 2018 after it was posted on the subreddit r/Damnthatsinteresting. It's not yet clear who the original artist behind the tattoo is, but it has fascinated thousands.
Does this floor need fixing, or is it just an illusion?
Amazing optical illusion at Casa Ceramica😍 (the floor is totally flat) pic.twitter.com/lLPG684cBZ— Hanna Brus (@HannaBrus) March 2, 2021
This Twitter user shared a photo of this cleverly deceptive tiled floor designed by UK-based tile company Casa Ceramica - I wonder how many legs have been broken on this floor?
Another weird flooring illusion...
Here we go. Here's the FNAC carpet pic.twitter.com/RTDqo3bw3J— CARPET (@WHS_Carpet) September 15, 2017
In September, Twitter account @WHS_Carpet - which specializes in calling out "bad carpets" - brought this disorienting photo to the internet's attention.
What color are these shoes?
THE REAL SHOE IS PINK & WHITE OKAY⁉️— alîsha (@zjmah) October 11, 2017
The second pic was with flash & darkened, so it looks teal & gray. (depends on what lighting ur in) pic.twitter.com/FlbO3OEEuC
In 2017, this shoe went viral after people started debating whether it was pink and white or gray and teal - a little like the second coming of The Dress debate from 2015, in which the internet could not agree on the true color of a bodycon dress.
How about the color of these strawberries?
2色法によるイチゴの錯視。この画像はすべてシアン色（青緑色）の画素でできているが、イチゴは赤く見える。— Akiyoshi Kitaoka (@AkiyoshiKitaoka) February 28, 2017
Strawberries appear to be reddish, though the pixels are not. pic.twitter.com/Ginyhf61F7
This illusion was created by Japanese psychologist and professor, Akiyoshi Kitaoka - the color red had been completely removed from the image, yet people still see red strawberries.
Can you find the cat?
Find a cat from r/pics
Originally posted by Reddit user, waterhauler, this simple photo went viral in 2016.
Hint: The ginger cat is sleeping on the center log.
What happened to Kendall Jenner's leg?
This star-studded photo of Kendall Jenner, Kylie Jenner, and Hailey Baldwin went viral in 2017 because of the absence of Kendall's left leg.
Where did it go?!
More missing leg drama...
Reddit user jr0d7771 posted this photo in 2016 along with the caption: "Find the middle girl's legs."
Again, where did they go?!
A seemingly normal brick wall, right?
Well, if you look closely, there's a cigar wedged between the bricks.
Can you see it?
Is one train track bigger than the other?
My toddler's train track is freaking me out right now. What is going on here?! pic.twitter.com/9o8bVWF5KO— Marc Blank-Settle (@MarcSettle) April 6, 2016
Or are they actually the same size?
This version of a classic optical illusion went viral in 2016 when BBC presenter, Marc Blank-Settle, posted a video of it on Twitter.
Sand dunes or craters?
European Space Agency astronaut, Luca Parmitano, took this photo of some sand dunes in 2013.
But why do the dunes in his picture look like craters?
Are these men stood on a flat floor? Or do they have insanely good balancing skills?
The floor of the Florence Cathedral has been designed to look like a tunnel, despite it being completely flat.
Are the wheels really turning?
This is the sort of optical illusion that describes the reality we're dealing with. It appears that it's moving and people might tell you it's moving, but it's not. Experts in how vision is processed can even explain why in detail. To believe that this is moving is irrational. pic.twitter.com/LHKCN1tjfe— Alison Pahlkotter (@ampcat81) February 27, 2021
This classic illusion appears to be moving at a first glance - but, upon closer inspection, it is simply a still image.
And as for the latest optical illusion?
Well, as expected, it's got everyone talking.
@pilgrimfarms Congrats from Nova Scotia. Enjoy the fame. ;)— Saeed El-Darahali (@saeedo) November 10, 2015
@pilgrimfarms It took me way, way, way too long to see the sheep. Wow!— Ingeborg Anne Rakvåg🐩 (@IngeborgRakvag) November 11, 2015
@pilgrimfarms Haha, great prank by mother nature and great shots! Thank you for sharing them!— Catherine Satori (@CatherineSatori) November 6, 2015
Check out the pictures right here ...
Can you see all five-hundred sheep?