What is an electric fence?

The use of electric fences is one of the most efficient methods of protecting the cattle against the attacks of wolves and other carnivores. An electric fence is placed all around the place in which the cattle grazes during the day, or rather around the pens for keeping the cattle during the night. The fence functions on the principle that electric impulses passing through it produce an unpleasant shock for the animal that touches the fence, but do not endanger its life. Therefore, after the first experience each animal, a wolf, a sheep or a goat, remembers that the touch of the electric fence is unpleasant and does not approach it any more.