Your Brain Decides What You See
The famous rabbit-duck drawing forces your brain to choose between two interpretations. You can never see both animals at the exact same time, revealing how your mind actively constructs reality rather than just recording it.
This classic optical illusion demonstrates that visual perception is not just about light entering your eyes. Your brain constantly makes educated guesses about ambiguous shapes to help you make sense of the world quickly. When you stare at the image, your focus shifts back and forth because your perspective flips instantly. It is a perfect example of how our expectations influence exactly what we perceive in front of us.
Source: Rabbit–duck illusion