Classical conditioning with gray wolves

On June 20, 2008 at 10:oopm on ABC during 20/20, this episode was about trying to keep gray wolves from attacking the livestock of farmers in the midwest. The farmers and biologists set up an electric fence around the livestock. When a wolf touched the fence, he/she would receive an electric shock. This was unpleasant to the wolf, therefore keeping the wolf away from the livestock and no longer being a threat to the farmers. This is a form of classical conditioning in which the electric fence was the conditioned stimulus and the wolves staying away from the livestock was the conditioned response.