A bench dog is a small, sturdy tool used in woodworking to hold workpieces securely on a workbench. Typically made of wood or metal, it fits into a hole on the surface of the bench, allowing it to be raised or lowered as needed. This tool helps stabilize materials while cutting, sanding, or shaping, ensuring precision and safety. Bench dogs are often used in conjunction with other tools, such as a vise or clamps, to enhance the stability of the workpiece. They can be adjusted to accommodate different thicknesses, making them versatile for various woodworking projects.