In India elephant keepers train baby elephants to stay put by tying a rope, with a stake on the one side, around one leg and placing the stake into the ground. The baby elephant pulls and pulls on the rope to no avail. This teaches the elephant that no matter what he does he cannot get away when attached to the rope. Later when the elephant is grown up and the keeper wants the elephant to stay put all he does is to tie a small piece of rope on that leg and the giant elephant is held to the spot by his own mind.