I run all around the pasture/field But never move. What am I?

Why this works

This riddle plays on the idea of movement versus position. The phrase "I run all around the pasture/field" suggests something that encircles an area, which leads us to think of physical objects. However, the twist comes with "but never move," indicating that while it may seem like this object is active or in motion, it is actually stationary. A fence fits perfectly because it encloses the field or pasture without actually moving itself, making it a clever play on the dual meanings of "run" as both a literal and figurative action.