Voni, a 12-year-old orang-utan, plays with Zico, her 3-month-old male baby, in Jakarta's Ragunan zoo in this March 12, 2008 file photo. Almost half the world's monkeys and apes are facing a worsening threat of extinction because of deforestation and hunting for meat, an international report showed on Aug. 5, 2008. An assessment for an International Union for Conservation of Nature [IUCN] "Red List" of endangered species found that 48 percent of the 634 known species and sub-species of primates, humankind's closest relatives such as chimpanzees, orang-utans, gibbons and lemurs, were at risk of extinction.[Xinhua/Reuters Photo]