Fat monkeys spend their time in a 420-square-meter enclosure at Ohama park in Sakai, Osaka Prefecture on May 4, 2008. A local report in April said that about 30 percent of the some 50 Macaca mulatta monkeys appeared to be overweight, due to overfeeding by visitors, which has alarmed the park's overseers. AFP PHOTO / KAZUHIRO NOGI (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)