Are you ready for the running of the balls?<br /><br />In an effort to have an animal-free alternative to the legendary "Running of the Bulls," towns throughout Spain are trading in for foam balls that can weigh as much as 660 pounds. <br /><br />The event, known as "boloencierro," spares bulls from cruel conditions and is a more affordable option. The change started years ago in the mountain town of Mataelpino.<br /><br />But the chase still has its danger. Recent injuries at the event are driving new discussions on safety. <br /><br />Run at your own risk!
