Endemic to limited areas in Colombia, cotton-top tamarins (Saguinus oedipus) are endangered because of increasing deforestation during the last decades.The variegated or brown spider monkey and the Peruvian yellow-tailed woolly monkey are species that lost their habitats in South and Central America. The numbers of bright orange golden lion tamarin are recovering in Brazil but its status is still endangered.
Only 7,000 Sumatran orangutans (Pongo abelii) live in the wild. Agriculture and palm oil plantations cause deforestation and threaten this species in the island of Sumatra, in Indonesia. Other endangered species native to Asia include the western hoolock gibbon; the Tonkin snub-nosed monkey, endemic of northern Vietnam, which was considered extinct until 1989; the pig-tailed langur, native to Indonesia; the gray-shanked Douc langur, with only 600 to 700 remaining individuals; the small nocturnal Horton Plains slender loris, from Sri Lanka; the Delacour langur and the golden-headed langur, with 250 and 65 individuals left, respectively.
The habit of consuming bush meat in many African rural communities helped to put the Cross River gorilla (Gorilla gorilla diehli) in the IUCN list of endangered primates. African endangered species also include the rondo dwarf galago, native to Tanzania, which weighs only 60 g ; the roloway guenon, which inhabits the forest of Ghana and Cote d'Ivoire; the Niger Delta red colobus monkey; and the Tana River red colobus, native from Kenya, with less than 1,000 animals living in the wild.
Located off the southeastern coast of Africa, Madagascar is home to lemurs and many other primate species, some of them endangered. The greater bamboo lemur is among the most critically endangered in Madagascar, with less than 160 individuals left. Other endangered species include the gray-headed lemur, the blue-eyed black lemur, the northern sportive lemur (Lepilemur septentrionalis) and the silky sifaka (Propithecus candidus).