Ever since it was published in 1892, the rabbit-duck illusion has been perplexing viewers with its remarkable ability to shapeshift. Does it show a rabbit and then a duck, a duck and then a rabbit, ...

It’s an optical illusion that we are all probably familiar with. When you look at the image, do you see a duck or a rabbit? The rest of this article is behind a paywall. Please sign in or subscribe to ...