The problem is when you're walking a BIG dog. Some of them weigh more than you do and if they get zapped, I guess their body just freezes and then how do you move them?
And if they're getting jolted and you go to grab them...you can get bit (no pun intended). What do you do in that case?
Even if the dog's on a leash, sometimes you can't avoid walking over those vault covers.
It's probably safer in cities and sections where the wires are overhead. You don't have to worry about where you step.
