The phrase “Rabbit or Duck” is not the title of a widely recognized encyclopedic entry. It is occasionally used colloquially to refer to the classic ambiguous line drawing that can be perceived as either a rabbit or a duck, more formally known as the duck–rabbit illusion (also called the Jastrow illusion). The original illustration was popularized by psychologist Joseph Jastrow in the late 19th century to demonstrate perceptual ambiguity and the role of context in visual interpretation.
Because there is no dedicated encyclopedic article titled “Rabbit or Duck,” the term lacks a distinct, well‑documented definition separate from the known illusion. Consequently, detailed encyclopedic information specifically under this phrasing is unavailable.
