The horse doesn’t appear as a clearly defined animal in the background. It’s suggested by the shapes, subtly integrated into the image. In other words, if you’re looking for an obvious horse, you’re likely to miss it. The mistake almost everyone makes.
Have you looked several times and still nothing? Don’t worry, that’s perfectly normal.
Most people make the same mistake: they look for an element added to the scene, when it’s actually a silhouette formed by the contours of the landscape.
The horse is defined by the contrasts and lines on the ground, between the elephant and the house. An elongated, discreet, almost camouflaged shape. A bit like those clouds in which you eventually make out a face or an animal… but only when you change your perspective.
The brain quickly recognizes familiar shapes, but can miss a more subtle silhouette. It’s this visual exercise that makes the visual challenge so captivating.