Is there a reason (however unjustified) that somebody kills dogs?
In our case, the boxer was killed because she kept the 'neighbors' from coming onto our property to steal lemons, mangos, plantanos, avocados, etc., from our many trees. They keep cutting through the fences. We had a confrontation recently with one guy who cut the fence at the rear of the property so his 3 cows could graze on our property. They ate a bunch of new trees we had just planted. The dog would chase them out, so a poisoned meatball takes care of that problem for them. How sad is that? The rottie in SD scared the neighborhood - she wasn't a barker unless someone she didn't know came near the gate to the back yard. My husband thinks someone wanted to rob the house, it happened right after we left to come home and he says the neighborhood knows we brought 'stuff' down. We bought a new rottie pup immediately and hope it doesn't happen again.