When the required percent of the qualified electors and the required number of townships shall have petitioned the county court for the privilege of voting on the question of restraining the animals named in the petition from running at large, when the court shall have called an election as provided by this subchapter, when the majority of the legal electors in the townships shall have voted for enforcing the law restraining such animals from running at large, and when the provisions of this subchapter shall have been adopted as prescribed in it, then it shall be unlawful for any of the animals to be found running at large outside of the enclosure of the owner or keeper of it.