Officials look at four dead mountain gorillas that were illegally killed in the Virunga National Park in the Democratic Republic of Congo during the week of July 26 in this file handout photo released by International Gorilla Conservation Programme on Aug. 10, 2007. 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.[Xinhua/Reuters Photo]