It is sad that people look at dogs as just property and if they would steal someone's money they don't hesitate to steal a persons dog.
As a result of that happening to us we have a patio with a very high fence up the stairs and a sliding gate and on the lower yard where Duke was a chain link fence all around the yard.
We never, but never let our dogs downstairs in the chain link fenced yard unless one of us is with them.
When we go off, we lock the gate so noone has access to the yard. Of course these Schnauzers don't like people so they really make a fuss if anyone comes around and they don't come for food.
When we were at Petsmart the cashier tried to give Daisy a cookie and she took it and spit it out. Then the cashier picked it up and gave it to her again and she spit it out again. I was pretty embarrassed, but on the other hand glad that she wouldn't take the food. LOL
In regard to Duke, we searched everywhere, went to all the shelters looking for him, drove all over in case they let him go and never found him, he was our Son's dog at the time and he was 15 and devestated. My father always felt bad, but it wasn't his fault.
Jackie