Do dogs like digging holes?
Reasons behind burrowing behavior
The act of digging can indeed be a way for dogs to relieve stress. This behavior may stem from the dog’s instincts and habits from its time as a wild animal. Digging provides your dog with a cool place to stay and diverts stress away from the digging activity.
If you notice your dog digging around in his made bed, this could be a sign that he is stressed or bored. In this case, playing with your dog is a good idea. Through games and interactions, you can help distract your dog and relieve stress. Proper exercise and stimulation can help your dog relax while also providing an alternative behavior so he can focus on interacting with you instead of digging.
Solution
You may also consider providing some digging-friendly toys or activities to allow your dog to express his digging instincts in a safe environment. This gives your dog an appropriate outlet to express his behavioral needs while protecting your furniture and bed.
Bottom line, if you notice your dog digging outside of the bed he's making, it could be his way of relieving stress. Playing with your dog and providing appropriate stimulation can help distract and relax your dog. It's also a good idea to provide toys or activities that are suitable for digging so that your dog has a suitable outlet to satisfy his digging instinct.