Why is my dog digging in the couch and how can I stop this behavior?

Dogs may dig in the couch due to boredom, anxiety, or a desire to create a comfortable spot. To stop this behavior, provide mental and physical stimulation, discourage digging with a firm "no," redirect their attention to a designated digging area, and consider using deterrents like double-sided tape or aluminum foil on the couch. Consistency and positive reinforcement are key in modifying this behavior.