Rat poop is usually dark brown or black and shaped like small pellets. The droppings are typically oval or spindle-shaped with pointed or blunt ends, depending on the rat species. Fresh rat droppings appear shiny and moist, while older droppings become dry and crumbly. They are commonly found near food sources, along walls, or in hidden areas like cupboards and basements. Seeing rat droppings often indicates an active rat infestation and should be addressed promptly.