A tale from a very long time ago.
We lived on a farm. Now and again we needed to isolate a few cows. For that purpose we had a temporary electric fence, just two strands was enough to keep the few beasts in captivity. Of course I had to test it - maybe I was destined to be an electrical engineer! Anyway, as long as you used a firm grip on the fence you could tolerate the shock otherwise you could have a helluva belt. So I was testing it when my dog came up and nudged my hand. Well, I had welly boots, he had just his paws. He belted off home like a scalded cat and hid under the table. He did forgive me but it needed a few hours.