I’m not a big fan of electronic or underground fences, though I realize some people may not have a good alternative. Besides the potential for being shocked, these containment systems come with several other risks.
Some dogs learn that putting up with a brief electronic shock can result in freedom if they run through. And even if the fence keeps your dog contained, it doesn’t do anything to prevent dangerous animals or people from coming into your yard.
Earlier this month, a dog was picked up by Dallas animal control when someone complained that the dogs were running loose. It turns out that the Springer Spaniels are enclosed by an invisible fence. Whether or not the fence was malfunctioning (this was a point of contention in the case), the fact of the matter is that leaving your dogs in an open yard unattended can put them at risk.