Do you remember the mysterious dress the gone viral on the internet, where some people saw it as white and gold, while others saw it as blue and black?
Now a similarly puzzling image - a red dot is making the rounds on the internet these days. An image of red dot containing a hidden image that only some people can see at the first glance. This image comes via PlayBuzz and it really does contain the outline of a horse.
While some people claim that they have seen a detailed drawing within the circle while other can only see a faint sketch and many can't see anything at all.
"Most people see nothing, others find the hidden image to be a plain outline-but did you see all of the hidden details, too?" the puzzle's explanation reads.
It seems to be an eyesight test to see how well your eyes can process subtle differences in color. Some people can only see the bare outline while others can see full details of the horse.