Why do dogs dig the couch and how can this behavior be prevented or redirected?

Dogs dig the couch as a natural instinct to create a comfortable resting spot or to relieve stress and boredom. This behavior can be prevented or redirected by providing appropriate outlets for digging, such as a designated digging area with soft soil or sand, providing mental and physical stimulation through toys and exercise, and using positive reinforcement training to discourage digging on the couch.