Digging is one of those dog behaviors that can seem downright mysterious to pet owners. Why is your dog digging a hole when it has nothing to bury?
The answer: chances are your dog is bored.
Digging often serves as a diversion to help an under-stimulated dog pass the time while it waits in the yard for someone to come home and play with it. To address it, engage your dog in active play more often. This is especially important if the digging becomes excessive, or if your dog injures itself while digging.