Digging is a very common problem many dog owners experience. As with all problems, it is important to understand the factors behind the behavior and then address them accordingly. An important aspect that dog owners often overlook when treating a digging problem is praising appropriate behaviors.
This is because too much emphasis is placed on looking for ways to correct the inappropriate behaviors. When you see your new companion out in the backyard engaging in proper behavior (i.e., chewing on his toys, sunning himself), that behavior should be praised. Keep in mind that the more owners positively reinforce a behavior, the stronger that behavior is going to be and the greater the likelihood that the dog will engage in it, both when you are there and when you are not.