[Crowbob]

What I did was get a manually-operated zapper-collar and took Cap out for walks along the entire perimeter of the property from day one.

As he grew older, we ventured inland wherein he had full freedom to range at will. It was actually very rare in which he had to get zapped. Of course, I whispered to him to be careful near the edges.

I was very pleased the first time I saw him chase a deer right up to the prop line and dead stop in full aggression mode.