The answer to 'why is my rat scratching sounds' is that rats often scratch and make noises as a way to communicate and mark their territory. Rats have sharp claws and teeth, and they may scratch on walls, floors, or furniture to create nesting areas, find food, or signal to other rats.
Some common signs of a rat problem include hearing scratching or scurrying noises, seeing droppings or gnaw marks, or observing the rats themselves. If the scratching is excessive or accompanied by other signs of an infestation, it's best to call a professional pest control technician to properly identify and address the issue.