Well the owner did not dig up the dog , the news paper report indicated the owners "friends" located the dog buried in the bush.After the dog was located by the friends the owner then called the police.If it was my dog and I was the owner I would be out tracking it but their could be a logical reason he was not,might have had to return to work or otherwise be out of camp which I assume he was.
All I,am saying is that there is as much likely hood an irate owner of a dog shooting it in the head as some random hunter/anti hunter
shooting it in the head. If it was either of the other two I suggest they were also morons for leaving the GPS on the body of the dog.
That should probably had been ditched in the first pond or lake.
They probably will not go into a ballistic test and all that,but the shooting is pretty sad.