Here is the latest optical illusion to take social media by fire. In this image, which you can discover a little further down in this article, many Internet users think they see a man with a rucksack seen from the back, walking through snowy woods. Others, however, are convinced that this is simply a picture of a small dog having fun in the snow, probably a poodle. So who is right?Man or dog ?Since the snapshot was posted on Twitter, the two interpretations have been vigorously at odds. He's a guy with a jacket and a hat running in the woods. I can tell by the gait that it is a person.Why can't I see the man? I only see the dog.I am curious to know how people who are seeing a man running could have explained the fact that the man who runs has a giant dog's head coming out of him.Others, less dogmatic, readily recognize that the image is extremely disturbing, and that you have to look at it several times before getting a proper idea.And the answer is...If you your eyes screwed on right, then you will have seen it correctly: this is a little black dog with a shaggy coat who walks happily through the snow. And as one particularly knowledgeable Internet user noted, the image is a perfect example of bistable perception, in other words a visual scene that can make you have several different interpretations. An optical illusion for tonight. First you see a man running into the snow ... and then ... pic.twitter.com\/R9Lj1mlR5X— nxthompson (@nxthompson) February 4, 2021 The whole debate is reminiscent of the classic white and gold\/blue and black dress that shook up the internet back in 2015.