Digging Dog? Try this
Digging is a very natural action for dogs. If you can redirect this digging to a particular area, it’s an excellent activity for your dog to be occupied with when he is alone and potentially bored.
You can use sleepers to mark a digging area, or a child’s plastic clam-shell can be ideal for a digging pit.
The only tools you’ll need to modify a plastic clam-shell into a dog digging-pit are a hammer and something sharp for punching drainage holes every 10cms or so in the shell (make sure there are no rough edges left on the holes).
Locate the digging pit in a shady part of the yard.
Your pit can consist mostly of the dirt that is already there, but you may wish to use sand or mix in some sand (sand-pit or washed sand, not brickies sand) for better drainage and easier digging.
Then regularly bury treasures (bones, toys, etc.) for your dog to discover. Until your dog gets the idea, leave a portion of the treasure uncovered as a hint to get him started.