Meet the couple who share their South African home with a 27-stone Bengal tiger | Mail Online http://www.dailymail.co.uk/news/article-2159103/Meet-couple-share-South-African-home-27-stone-Bengal-tiger.html
PHOTO: Life with a tiger as a pet | Baltic News Network - News from Latvia, Lithuania, Estonia http://bnn-news.com/life-tiger-pet-65466
Stone (unit) - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Stone_(unit)
英石 - 维基百科,自由的百科全书(1英石等於6.35029318公斤或14磅) http://zh.wikipedia.org/wiki/%E8%8B%B1%E7%9F%B3