A tiger yawns while a piglet stands beside it at Sriracha Tiger Zoo, in Chonburi province, Thailand, June 7, 2016. REUTERS/Chaiwat Subprasom/File photo

A tiger yawns while a piglet stands beside it at Sriracha Tiger Zoo, in Chonburi province, Thailand, June 7, 2016. REUTERS/Chaiwat Subprasom/File photo

A tiger yawns while a piglet stands beside it at Sriracha Tiger Zoo, in Chonburi province, Thailand, June 7, 2016. REUTERS/Chaiwat Subprasom/File photo

August 24, 2016 7:12 AM (UTC+8)