A cattle guard is a type of barrier used in agriculture to prevent livestock, such as cattle, from crossing a specific point, like a road or fence line. It typically consists of a series of horizontal bars or pipes placed in a trench, allowing vehicles to pass while deterring animals from walking over it. The design takes advantage of the animals' natural reluctance to step over gaps. Cattle guards are commonly found in rural areas, especially on ranches and farms. They help maintain the separation between grazing lands and public or private roads, ensuring both safety for drivers and containment for livestock.